sudden /ˈsʌdn̩/ adjective Learner's definition of SUDDEN
[more sudden; most sudden]
: happening, coming, or done very quickly in a way that is usually not expected突然的；忽然的；出乎意料的 -
a sudden change/rise in temperature气温突变；骤然升温
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Sudden fame/success can be difficult to deal with.突如其来的成名/成功可能会让人难以应对。
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She had a sudden urge to be outside.她忽然迫切地想到户外去。
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His death was very sudden.他的死很突然。
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a sudden turn in the road急转弯
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I was surprised by her sudden decision to quit.她突然决定辞职，这让我很吃惊。
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The director's sudden departure leaves the organization's future uncertain.主管突然离职使得这个组织前途未卜。
all of a sudden
: suddenly -
I was walking down the street when, all of a sudden, it started raining.我在街上行走时突然下起了雨。
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All of a sudden, I saw what he was looking at.我突然明白了他在看什么。
— suddenness
/ˈsʌdn̩nəs/ noun [noncount]