The boy was hiding behind a tree.

那个男孩躲在一棵树后。

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When a snowball hit me, I was hiding behind a tree.

当一个雪球击中我的时候，我正躲在一棵树后。

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And we sometimes may be led astray, perhaps because a street sign is hiding behind a tree, or by a poorly marked on-ramp.

有时我们可能会被误导而引入歧途，也许是仅仅为了一棵大树后面的路牌，或者是由于一个错误的驶进坡道的标志。

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