其实监狱有两把锁，一把内锁，一把外锁。

Now this jail has got two locks, one inside, one outside.

youdao

带锁外开执手，可以防止儿童操作发生危险。

With lockable handle, children can be protected from dangerous .

youdao

带锁外开执手，可以防止儿童操作发生危险。

With lockable handle, children can be protected from dangerous .

youdao