MEANING/意义
一定
EXAMPLES/列句
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在一定程度上to some extent,to some degree
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一定是被猫喝了it must have been drunk by the cat
COMBINATIONS/组合
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一定要must,have to
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一定是must be
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一定的(used as attributive) certain,particular; proper,due; fixed,specified
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不一定not always,not necessarily
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一定数量a certain number
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一定之规fixed pattern,set rule; one's own way of doing things