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@ -191,5 +191,5 @@ private:
**请记住：**
+ 确保`const`成员函数线程安全，除非你**确定**它们永远不会在并发区（*concurrent context*）中使用。
+ 确保`const`成员函数线程安全，除非你**确定**它们永远不会在并发上下文（*concurrent context*）中使用。
+ 使用`std::atomic`变量可能比互斥量提供更好的性能，但是它只适合操作单个变量或内存位置。