It's next to / in front of / behind / on theleft (right) side of the library.

它在左边前面/后面/旁边/（右）侧的图书馆。

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Then lay your front wheel on the right side of the case.

然后将您的前轮组平放在行李箱的右边。

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Then lay your front wheel on the right side of the case.

然后将您的前轮组平放在行李箱的右边。

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