翻译"Factories should pour as little waste gas as possible"

翻译Factories should pour as little waste gas as possible We should stop factories from pouring waste water into the river and waste gas into the air.翻译汉 There should be some rules against factories cause pollution.这句话中,against 是什么词性,什么含义,against 引起的是什么句子结构?整句翻译又是什么?对了，不好意思，factories后还有个which which 是定语从句了 Factories should give up producing unhealthy gases.同意句 Today there are already robots working in factories.翻译 改为同义句:Factories should give up producing unhealthy gases.Factories should give up producing unhealthy gases.Trees are the biggest and oldest living things on Earth. 用英语解释句子factories should give up producing unhealthy gases factories variants The factories p_____ waste water into the river.翻译,加答案,加解题思路 why are't there many factories like the Simi factory.怎样翻译 Look,there are several chemical factories pouring waste water into the stream 翻译 It says there will be many robots in our homes and factories in the future.（翻译） (许多河流和湖泊开始被the waste water from factories所污染)用英语怎么翻译? but for his advice ,i would never have got the jobelectric light kept factories going around the clock翻译这两句 the factories would put their waste into the lakes这句话 would 是什么作如何翻译这句话 翻译一下i make machines and tools used in factories.尤其是used 在此句中是什么意思,什么作用. We should save water.翻译 求翻译 Should It Matter