题目内容
3.The birds moved to habitat to the northern mountain . (due)
由于空气污染,鸟的栖息地移到了山北。
3.due to the air pollution
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题目内容
3.The birds moved to habitat to the northern mountain . (due)
由于空气污染,鸟的栖息地移到了山北。
3.due to the air pollution