n.闩锁钥匙,弹簧锁钥匙;
例句:
I was a so-called latchkey kid.
我曾被叫做“挂钥匙儿童”.
At nine o'clock I heard my uncle's latchkey in the hall door.
九点钟时我听见舅舅用钥匙开大门的声音.
On the doorstep he felt in his hip pocket for the latchkey.
他站在门口的台阶上,摸了摸后裤兜,找大门钥匙.