介词短语
中文翻译：通过这个
同义词：
['through', 'by means of', 'via']
例句：
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1.By this time tomorrow, I will have finished my homework.
到明天这个时候，我已经完成了我的作业。
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2.She decided to leave by this train station.
她决定乘这列火车离开。
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3. The book was published by this author.
这本书是由这位作者出版的。