adj. 1.哑的，不能说话的。 2.沉默的，无言的。 3.无音的，无声的，不响的；打手势的，打哑语的。 4.口齿不清的，(在政府中)无代言人的，政治上无发言权的。 短语和例子 the deaf and dumb 聋哑人。 be (remain) dumb on (sth.) 闭口不提(某事)。 be struck dumb 吓呆，吓得目瞪口呆。 dumb down 降低…的难度。
unable to speak because of hereditary deafness 同义词：mute, silent,
lacking the power of human speech; "dumb animals"
temporarily incapable of speaking; "struck dumb"; "speechless with shock" 同义词：speechless,
slow to learn or understand; lacking intellectual acuity; "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students" 同义词：dense, dim, dull, obtuse, slow,
例句与用法
1.
A dumb and grumbling anger swelled his bosom . 他心里涌起一股无名怒火。
2.
Somebody must think he was dumb . 有人会认为他是一个傻瓜。
3.
Here's your deaf and dumb son . 这便是你那又聋又哑的儿子。
4.
But you were dumb as a beast . 但你却象野兽一样的缄默。
5.
The reality struck him dumb . 现实使他目瞪口呆。
6.
Animal rabies can be classified as furious or dumb . 动物狂犬病可分为狂暴的和沉默的二类。
7.
Grrandet was solemn, chales silent, eugenie dumb . 葛朗台严肃，查理静默，欧也妮一声不出。
8.
The instinct that goaded him to flight never was dumb . 那种催他逃命的本能也一直没个安宁。
9.
He was dumb from birth . 他一生下来就是哑巴。
10.
In dumb rabies there is a very short excitation phase . 在狂犬病潜伏期，有一非常短的兴奋期。
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