latch key

同根派生

Nowadays, with both parents working, more children are being left “home alone” after school. Such children used to be called “latch key children”. Today, this is called “self-care”.
现在的父母都要上班，很多孩子放学后都要独自在家。这样的孩子以前叫作“挂钥匙的孩子”。今天，这种方式通常叫作“自理”。
If I could only latch onto some of your know- how.
要是我能有一点你的那种决窍就好了。
Latch on to some very valuable books.
搞到几本极有价值的书。
Please latch the front gate when you leave.
走时请把大门的碰锁锁好。
Please leave the door latch shut.
请把门闩上。