化学式（英文）

作者：刘雪婷

来源：英语画刊(高级版), 2018, (10): 96.

<正>Teacher:What’s the chemical formula for carbondioxide(二氧化碳)?Student:COCO.Teacher:COCO?What do you mean,COCO?Student:Well,you said in the last class that’s it CO two(actually it’s CO2).