问题描述：
当男孩沿着街走时,UFO降落了 这句话的翻译
“当男孩沿着街走时,UFO降落了”这句话的翻译
一定要是"The boy was walking down the street when the UFO landed."吗?
不能是"When the UFO landed ,the boy was walking down the street ."吗?
“当男孩沿着街走时,UFO降落了”这句话的翻译
一定要是"The boy was walking down the street when the UFO landed."吗?
不能是"When the UFO landed ,the boy was walking down the street ."吗?
问题解答：
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