中国进入工业化时代，大量的工厂产生的气体污染了空气的翻译：China to enter the industrial age, a large number of factories producing gas polluted the air 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

China entered the industrial age, a large number of factories polluting the air produced by gas

China to enter the industrial age, a large number of factories producing gas polluted the air

China enters the industrialization time, the massive factories produce the gas has polluted the air

China's entry into the industrial age, a large number of factories producing gas polluting the air

China to enter the industrial age, a large number of factories producing gas polluted the air