更新合约文档，翻译为中文以增强可读性，包括 AccessControl、Ownable、ERC20 和 IERC20 的相关说明。修正了一些注释以确保准确性和一致性。

contracts/access/AccessControl.sol

@@ -8,22 +8,18 @@ import {Context} from "../utils/Context.sol";
 import {IERC165, ERC165} from "../utils/introspection/ERC165.sol";
 
 /**
- * @dev Contract module that allows children to implement role-based access
- * control mechanisms. This is a lightweight version that doesn't allow enumerating role
- * members except through off-chain means by accessing the contract event logs. Some
- * applications may benefit from on-chain enumerability, for those cases see
- * {AccessControlEnumerable}.
+ * @dev 合约模块，允许子合约实现基于角色的访问控制机制。这是一个轻量级版本，
+ * 不允许枚举角色成员，除非通过链下方式访问合约事件日志。某些应用可能会受益于链上可枚举性，
+ * 对于这些情况，请参见 {AccessControlEnumerable}。
  *
- * Roles are referred to by their `bytes32` identifier. These should be exposed
- * in the external API and be unique. The best way to achieve this is by
- * using `public constant` hash digests:
+ * 角色通过其 `bytes32` 标识符来引用。这些应该在外部 API 中公开并且是唯一的。
+ * 实现这一点的最佳方法是使用 `public constant` 哈希摘要：
  *
  * ```solidity
  * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
  * ```
  *
- * Roles can be used to represent a set of permissions. To restrict access to a
- * function call, use {hasRole}:
+ * 角色可以用来表示一组权限。要限制对函数调用的访问，请使用 {hasRole}：
  *
  * ```solidity
  * function foo() public {
@@ -32,19 +28,15 @@ import {IERC165, ERC165} from "../utils/introspection/ERC165.sol";
  * }
  * ```
  *
- * Roles can be granted and revoked dynamically via the {grantRole} and
- * {revokeRole} functions. Each role has an associated admin role, and only
- * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
+ * 角色可以通过 {grantRole} 和 {revokeRole} 函数动态授予和撤销。每个角色都有一个关联的管理员角色，
+ * 只有具有角色管理员角色的账户才能调用 {grantRole} 和 {revokeRole}。
  *
- * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
- * that only accounts with this role will be able to grant or revoke other
- * roles. More complex role relationships can be created by using
- * {_setRoleAdmin}.
+ * 默认情况下，所有角色的管理员角色是 `DEFAULT_ADMIN_ROLE`，这意味着只有具有此角色的账户
+ * 才能授予或撤销其他角色。可以使用 {_setRoleAdmin} 创建更复杂的角色关系。
  *
- * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
- * grant and revoke this role. Extra precautions should be taken to secure
- * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
- * to enforce additional security measures for this role.
+ * 警告：`DEFAULT_ADMIN_ROLE` 也是其自身的管理员：它有权限授予和撤销这个角色。
+ * 应该采取额外的预防措施来保护已被授予此角色的账户。我们建议使用 {AccessControlDefaultAdminRules}
+ * 来为此角色强制执行额外的安全措施。
  */
 abstract contract AccessControl is Context, IAccessControl, ERC165 {
     struct RoleData {
@@ -57,8 +49,8 @@ abstract contract AccessControl is Context, IAccessControl, ERC165 {
     bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
 
     /**
-     * @dev Modifier that checks that an account has a specific role. Reverts
-     * with an {AccessControlUnauthorizedAccount} error including the required role.
+     * @dev 检查账户是否具有特定角色的修饰符。如果没有，则使用 {AccessControlUnauthorizedAccount} 错误
+     * 回退，包括所需的角色。
      */
     modifier onlyRole(bytes32 role) {
         _checkRole(role);
@@ -71,23 +63,22 @@ abstract contract AccessControl is Context, IAccessControl, ERC165 {
     }
 
     /**
-     * @dev Returns `true` if `account` has been granted `role`.
+     * @dev 如果 `account` 已被授予 `role`，则返回 `true`。
      */
     function hasRole(bytes32 role, address account) public view virtual returns (bool) {
         return _roles[role].hasRole[account];
     }
 
     /**
-     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
-     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
+     * @dev 如果 `_msgSender()` 缺少 `role`，则使用 {AccessControlUnauthorizedAccount} 错误回退。
+     * 重写此函数会改变 {onlyRole} 修饰符的行为。
      */
     function _checkRole(bytes32 role) internal view virtual {
         _checkRole(role, _msgSender());
     }
 
     /**
-     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
-     * is missing `role`.
+     * @dev 如果 `account` 缺少 `role`，则使用 {AccessControlUnauthorizedAccount} 错误回退。
      */
     function _checkRole(bytes32 role, address account) internal view virtual {
         if (!hasRole(role, account)) {
@@ -96,61 +87,57 @@ abstract contract AccessControl is Context, IAccessControl, ERC165 {
     }
 
     /**
-     * @dev Returns the admin role that controls `role`. See {grantRole} and
-     * {revokeRole}.
+     * @dev 返回控制 `role` 的管理员角色。请参见 {grantRole} 和 {revokeRole}。
      *
-     * To change a role's admin, use {_setRoleAdmin}.
+     * 要更改角色的管理员，请使用 {_setRoleAdmin}。
      */
     function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
         return _roles[role].adminRole;
     }
 
     /**
-     * @dev Grants `role` to `account`.
+     * @dev 将 `role` 授予给 `account`。
      *
-     * If `account` had not been already granted `role`, emits a {RoleGranted}
-     * event.
+     * 如果 `account` 尚未被授予 `role`，则发出 {RoleGranted} 事件。
      *
-     * Requirements:
+     * 要求：
      *
-     * - the caller must have ``role``'s admin role.
+     * - 调用者必须具有 `role` 的管理员角色。
      *
-     * May emit a {RoleGranted} event.
+     * 可能发出 {RoleGranted} 事件。
      */
     function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
         _grantRole(role, account);
     }
 
     /**
-     * @dev Revokes `role` from `account`.
+     * @dev 从 `account` 撤销 `role`。
      *
-     * If `account` had been granted `role`, emits a {RoleRevoked} event.
+     * 如果 `account` 已被授予 `role`，则发出 {RoleRevoked} 事件。
      *
-     * Requirements:
+     * 要求：
      *
-     * - the caller must have ``role``'s admin role.
+     * - 调用者必须具有 `role` 的管理员角色。
      *
-     * May emit a {RoleRevoked} event.
+     * 可能发出 {RoleRevoked} 事件。
      */
     function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
         _revokeRole(role, account);
     }
 
     /**
-     * @dev Revokes `role` from the calling account.
+     * @dev 从调用账户撤销 `role`。
      *
-     * Roles are often managed via {grantRole} and {revokeRole}: this function's
-     * purpose is to provide a mechanism for accounts to lose their privileges
-     * if they are compromised (such as when a trusted device is misplaced).
+     * 角色通常通过 {grantRole} 和 {revokeRole} 进行管理：此函数的目的是为账户提供一种机制，
+     * 在它们受到损害时（例如当受信任的设备丢失时）失去其特权。
      *
-     * If the calling account had been revoked `role`, emits a {RoleRevoked}
-     * event.
+     * 如果调用账户的 `role` 已被撤销，则发出 {RoleRevoked} 事件。
      *
-     * Requirements:
+     * 要求：
      *
-     * - the caller must be `callerConfirmation`.
+     * - 调用者必须是 `callerConfirmation`。
      *
-     * May emit a {RoleRevoked} event.
+     * 可能发出 {RoleRevoked} 事件。
      */
     function renounceRole(bytes32 role, address callerConfirmation) public virtual {
         if (callerConfirmation != _msgSender()) {
@@ -161,9 +148,9 @@ abstract contract AccessControl is Context, IAccessControl, ERC165 {
     }
 
     /**
-     * @dev Sets `adminRole` as ``role``'s admin role.
+     * @dev 将 `adminRole` 设置为 `role` 的管理员角色。
      *
-     * Emits a {RoleAdminChanged} event.
+     * 发出 {RoleAdminChanged} 事件。
      */
     function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
         bytes32 previousAdminRole = getRoleAdmin(role);
@@ -172,11 +159,11 @@ abstract contract AccessControl is Context, IAccessControl, ERC165 {
     }
 
     /**
-     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
+     * @dev 尝试将 `role` 授予给 `account` 并返回一个布尔值，指示是否授予了 `role`。
      *
-     * Internal function without access restriction.
+     * 内部函数，无访问限制。
      *
-     * May emit a {RoleGranted} event.
+     * 可能发出 {RoleGranted} 事件。
      */
     function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
         if (!hasRole(role, account)) {
@@ -189,11 +176,11 @@ abstract contract AccessControl is Context, IAccessControl, ERC165 {
     }
 
     /**
-     * @dev Attempts to revoke `role` from `account` and returns a boolean indicating if `role` was revoked.
+     * @dev 尝试从 `account` 撤销 `role` 并返回一个布尔值，指示是否撤销了 `role`。
      *
-     * Internal function without access restriction.
+     * 内部函数，无访问限制。
      *
-     * May emit a {RoleRevoked} event.
+     * 可能发出 {RoleRevoked} 事件。
      */
     function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
         if (hasRole(role, account)) {