Synchronized methods and blocks allow a thread to lock an object on entry and unlock the object on exit (to the method or block).

同步的方法和代码块允许线程在入口处锁定对象并在出口处解锁(针对方法或代码块)。

youdao

When you exit, the doors lock and the interior is automatically washed and sanitized for the next customer.

当你出来时，门会锁上，里面就会自动冲洗，弄干净，以待下一会用户。

youdao

Using scoped_lock, you don't need to explicitly lock or unlock the file; the locking occurs inside the constructor, and the unlocking happens automatically whenever you exit the scope.

如果使用scoped_lock，就不需要显式地锁定或解锁文件；锁定发生在构造器内，每当您退出该范围，就会自动发生解锁。

youdao

Israel should use Blair's exit from the world stage as an opportunity to lock its doors and shutter its windows before any new European friends can come inside.

CENTERFORSECURITYPOLICY: The Free World's Achilles Heal