单词：advection effluent
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单词：advection effluent 相关文章
Water pollution 水污染 A: Is the lake very polluted? A.这个湖污染严重吗？ B: Well, I wouldn't swim in it- but the water is much cleaner than it was a few years ago. B:哦，我没法在里面游泳，但是比前几年清洁多了。 A: A
发表于:2019-01-14 / 阅读(161) / 评论(0)
职业技术英语口语
职业技术英语口语