several millions of years ago 不对, 一般我们说 millions of years ago, 不会用several
several million years ago 与several millions of years ago 的区别
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相关问题
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several years ago
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Millions and millions of years ago,the world was much warmer
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“several years ago”用于什么时态?
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what he said _[(影响)the lives of millions years ago
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several years ago,well-known的意思,
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I have been there several years ago与I went there several yea
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several years ago i noticed something strange ..
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Several years ago,I become very sad.
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several million people还是several millions of people问什么
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具体是several millions of students还是several million students