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ADJ
哑的;不能说话的
Someone who is dumb is completely unable to speak.
例句
...a young deaf and dumb man.
年轻的聋哑男子
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ADJ
(在某种场合下因愤怒或惊讶而)说不出话的,哑口无言的
If someone is dumb on a particular occasion, they cannot speak because they are angry, shocked, or surprised.
例句
We were all struck dumb for a minute.
一时间我们惊讶得哑口无言。
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ADJ-GRADED
(人)愚蠢的,傻的,笨的
If you call a person dumb, you mean that they are stupid or foolish.
例句
I've met a lot of dumb people...
我遇到过很多笨蛋。
The questions were set up to make her look dumb.
问题这么设计，就是为了让她出丑。
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ADJ-GRADED
愚蠢的;令人心烦的;令人恼火的
If you say that something is dumb, you think that it is silly and annoying.
例句
I came up with this dumb idea...
我想出了这个馊主意。
It's the media that's dumb.
让人恼火的是媒体。
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ADJ
无声的;无言的;不用言语表达的
Something that is dumb is done or expressed without words.
例句
An expression of dumb recognition wiggled across her features.
她不语，从她脸上掠过的一丝表情可知她是认得的。