a metal bar with a catch and lever used for fastening a door or gate
门闩。
a spring lock for an outer door, which catches when the door is closed and can only be opened from the outside with a key
弹簧锁。
【电子】 门闩线路，锁存器。
the part of a knitting machine needle which closes or opens to hold or release the wool
编织机针上的针舌。
fasten (a door or gate) with a latch
闩上（门）
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she latched the door carefully .她小心地闩上了门。
[no obj.]
【电子】 （装置）状态恒定。
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on the latch （of a door or gate） closed but not locked （门）关着但没锁上let yourself in, the door's on the latch ． 你进来吧，门没锁
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latch on （of a breastfeeding baby） manage to get its mouth into the correct position around the nipple （哺乳婴儿）用嘴叼到乳头 -
latch on to informal 〈非 正式〉1 attach oneself to （someone） as a constant and usually unwelcome companion 死皮赖脸地接近（某人）；纠缠he spent the whole evening trying to latch on to my friends ． 他整个晚上都纠缠着我的朋友们 -
take up （an idea or trend） enthusiastically 热情地考虑，热情地接受（想法，潮流）
the newspapers latched on to the idea of healthy eating ． 报纸热情宣传健康饮食的观念 -
Brit ． （of a football or rugby player） take advantage of （another player's move）， typically in order to score a goal or try 〈英〉 （足球、英橄运动员）利用（另一运动员的行动）Nevin latched on to a miscued header to smash home the winning goal ． 内文利用一个失误的头球用猛力为本队踢中了那个定胜负的一球 -
（of one substance） cohere with （another）（一物质）黏附（另一物质）
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2 understand the meaning of （something） 理解，明白 ［with clause］she'll soon latch on to what is happening ． 她很快就会理解发生了什么
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latchn.门闩；锁存器；弹簧锁；门闩线路；编织机针上的针舌
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matchn.比赛；对手；敌手；相配的人；配得上的人；火柴；搭配；配合；配对；婚姻
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batchn.一批生产量；一组；一批；一群；批量；成批
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catchv.截住；拿住；捕获；意外地被缠住；赶上；吸引；激发；击打；感染；起火；着火
"Old English