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最佳答案：He strained herself to counterattack.
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最佳答案：end over backwards
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最佳答案：it's time for you to do your best
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最佳答案：He has made up his mind to do what he can to realize his dream to go to a univer
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最佳答案：We are trying our best to catch up with those developed countries
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最佳答案：follow by all means
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最佳答案：请积极配合并及时跟进.我们需要尽全力配合客户解决这个问题英文：Actively cooperate with the requests in a timely
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最佳答案：as long as
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最佳答案：专家的建议是我们该竭尽全力来禁止濒危动物被杀 The expert's suggestion is that we should do what we can
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最佳答案：By against protects with all one's strength primarily,以防为主 moves as soon as poss