英语翻译
问题描述:
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
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?