On the negative side, automobiles are the main source of air pollution in the world which creates the so-called green-houseeffect.
而消极的一面是，汽车是世界上污染的主要来源，产生了所谓的温室效应。
2
This increases the green-houseeffect, trapping more heat close to the surface of the Earth and causing the planetary temperature rise that we are seeing.
这增加了绿房子的效果，捕捉更多的热量接近地球表面，导致行星的温度上升，我们看到的。
3
Refrigerating industry, which is closely related to our daily life, is facing severe challenge because some refrigerating fluids used consume Ozone layer and increase green-houseeffect.