MEANING/意义
来回
EXAMPLES/列句
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你来回答这个问题you will answer this question
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他来来回回找了三次he searched back and forth for three times
COMBINATIONS/组合
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来回跑run back and forth (between two places)
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来回票round-trip ticket
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来回机票round-trip ticket
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来来回回back and forth for many times