英语翻译
我想说＂是否pm2.5是空气污染物中最致命的物质＂,写成＂Is the pm2.5 the most deadly substance in all air pollutant"对吗
人气：322 ℃ 时间：2019-09-13 20:54:29
解答
1.Is pm2.5 the most deadly substance among all the air pollutants?
2.Among all the air pollutants,is pm2.5 the most deadly substance?
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