lock

I had to call a locksmith because the key broke inside the front door lock.

(Chinese) 我不得不打电话给锁匠，因为钥匙断在前门的锁里了。

Make sure the digital lock is activated before you leave the apartment.

(Chinese) 离开公寓前，请确保电子锁已激活。

Don't forget to lock the windows and the back gate before you go to bed.

(Chinese) 上床睡觉前别忘了锁上窗户和后门。

The safe will automatically lock if the wrong code is entered three times.

(Chinese) 如果输入三次错误代码，保险箱将自动锁定。