Every day these factories pour millions upon millions of tons of smoke and soot into the air.
Every day these factories pour millions upon millions of tons of smoke and soot into the air.
每天这些工厂将会把千百万吨的烟灰排入空气中。
Every day these factories pour millions upon millions of tons of smoke and soot into the air.
每天这些工厂将会把千百万吨的烟灰排入空气中。