水桶包面世已有很长一段时间了。

The bucket bag has been around for a long time.

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而水桶包的构造则恰好相反。

A bucket bag is the opposite of structure.

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从那时起，水桶包每过一二十年就会流行一次。

Since then, bucket bags have come in and out every decade or two.

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从那时起，水桶包每过一二十年就会流行一次。

Since then, bucket bags have come in and out every decade or two.

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