The door doesn't lock.
这门锁不上。
You were silly not to have locked your car.
你没把车锁上真是太糊涂了。
Oliver was immediately locked in a room.
奥利弗立刻被锁进一间屋子里。
[C]
open a lock with the key
用钥匙开锁
a bicycle lock
自行车车锁