dangerous gases

• 有害气体

dangerous gases的用法和样例：

例句

1. The air is infected with noisome gases.
   空气受到了有害气体的污染。
2. They say it cuts the smoke and dangerous gases by up to eighty percent compare to open fires or simple traditional stoves.
   他们说相比明火和简单的传统炉灶，这种炉灶的烟尘和有害气体的排放量下降了百分之八十以上。