核心词议：
vi. 占有，抓住；闭锁
vt. 闩上；纠缠住某人
latch 基本解释
n. 门闩；弹簧锁
vt.& vi. 闩上；用碰锁锁上（门等）；抓住，占有
vt.& vi. 闩上；用碰锁锁上（门等）；抓住，占有
速记方法
速记技巧 词源记忆法 可能来自PIE*slagw，抓住，词源同lemma，syllable，epilepsy.用于指门闩，插销。
知识扩展
短语动词 短语动词 习语 latch on latch onto 1缠住（或抓住）…不放；对…产生浓厚兴趣 2依附（于）；附着（于） 查看更多 以下资源来自牛津词典 latch on (to sth) latch onto sth (informal) 理解，懂得，领会（想法或某人的话） to understand an idea or what sb is saying It was a difficult concept to grasp, but I soon latched on. 那是个难以弄明白的概念，但我很快就理解了。 latch on (to sb/sth) latch onto sb/sth (informal) 1 变得依附于 to become attached to sb/sth antibodies that latch onto germs 依附于细菌的抗体 2 纠缠，缠住（某人） to join sb and stay in their company, especially when they would prefer you not to be with them 3 对…产生浓厚的兴趣 to develop a strong interest in sth She always latches on to the latest craze. 她总是对最新时尚有浓厚的兴趣。 收起 n. on the latch (BrE) 关着但未锁上 closed but not locked Can you leave the door on the latch so I can get in? 你别锁门好不好？我好进来。
latch 变化形式
复数： latches
第三人称单数： latches
过去式： latched
过去分词： latched
现在分词： latching
易混淆的单词： Latch
第三人称单数： latches
过去式： latched
过去分词： latched
现在分词： latching
易混淆的单词： Latch
中文词源： latch 门闩，插销 可能来自PIE*slagw,抓住，词源同lemma,syllable,epilepsy.用于指门闩，插销。 latch
精选例句
1、 He lifted the latch and opened the door.
他拉起门闩开了门。
2、 You left the latch off the gate and the dog escaped.
你没插门闩，狗跑了。
常见考点例句：
- It has no latch , and doesn 't switch the ipad screen on and off .
- 它没有碰锁，不能开关ipad2的显示屏。
- Through a series of experiments in ferrets , he isolated a strain with four mutations that helped the virus latch on to and infect cells in the throat .
- 通过一系列在雪貂身上的实验，他分离出一个具有四个突变的毒株，它们有助于病毒抓住并感染喉部细胞。
- Dendritic cells normally latch on to bacteria and viruses before migrating to the lymph nodes , where they present the alien material to the immune system 's " killer " t-cells that seek and destroy such invaders .
- 胞在入淋巴之前通常抓住菌和病毒，在淋巴它己物提供免疫系的“手”t胞，t胞找并入侵者。
