这将迫使企业更加节约资源。It would force industries to be more careful with natural resources.在我看来，减少图书馆的数量并不是真正的节约。It seems a false economy to me to cut down on libraries.为了节约能源，该共和国的工厂周末不开工。The republic's factories have closed...
The heavy traffic tinctures the air with carbon monoxide.繁忙的交通使空气里充满一氧化碳.The limit for carbon monoxide is 4.5 per cent of the exhaust gas.尾气中一氧化碳的排放限量为4.5%。Both nicotine and carbon monoxide inhaled with cigarette smoking...