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最佳答案：fail to do sthfail sthfail in doing sth
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最佳答案：Youth believes no failure(s)
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最佳答案：You will be succeed or be fail.
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最佳答案：A man should do such a failure
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最佳答案：the deal fall through 是对的也比较正式
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最佳答案：No matter how hard he tried,he failed again and again.