所有汽车排放到空气中的煤烟更是几乎成倍增加。

And the amount of soot added to the atmosphere as a result of all our cars nearly doubles.

youdao

所有汽车排放到空气中的煤烟更是几乎成倍增加。

And the amount of soot added to the atmosphere as a result of all our cars nearly doubles.

youdao