latch

占有，抓住；闭锁中释v

门闩英释中释na small metal or plastic object used to keep a door, gate, or window closed

1 latch on,占有；抓住；理解

2 on the latch,关着但不上锁

1 Gwen lifted the latch and opened the gate..格温拉起门闩，把门打开。