单词:effluent sewerage
下水道污水;排出污水
单词:effluent sewerage 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(65) / 评论(0)
职业技术英语口语