Nitrogendioxide is a pollutant emitted by automobiles.
二氧化氮是汽车排放的一种污染物。
2
Nitrogendioxide in the smoke induces the seeds to germinate.
烟雾中的二氧化氮诱导种子发芽。
3
In areas with heavy automobile traffic, however, the seed germinates in the absence of fire, with automobile exhaust supplying the required nitrogendioxide.