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N-COUNT
門閂；插銷
A latch is a fastening on a door or gate. It consists of a metal bar which you lift in order to open the door.
例句
You left the latch off the gate and the dog escaped.
你沒把門閂插上，所以狗跑了。
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N-COUNT
碰鎖；彈簧鎖
A latch is a lock on a door which locks automatically when you shut the door, so that you need a key in order to open it from the outside.
例句
...a key clicked in the latch of the front door.
鑰匙插進前門彈簧鎖里發出咔嗒一聲
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VERB
用閂閂上；用碰鎖鎖上
If you latch a door or gate, you fasten it by means of a latch.
例句
He latched the door, tested it, and turned around to speak to Frank.
他把門鎖上，又試了試，然后轉身和弗蘭克說話。