Definition
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by
The word 'by' indicates the means or method through which something is done or achieved.
‘by’这个词表示通过某种方式或方法完成或实现某事。
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She traveled by train to the city.
她通过火车到达城市。
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The book was written by a famous author.
这本书是通过一位著名作家的笔写成的。
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He solved the problem by using a calculator.
他通过使用计算器解决了这个问题。