GbEng
石油化工产品现在已占所有化学制品的四分之一,十年后预计这个数目还要加倍。 Petrochemicals today account for one fourth of all the chemicals made, in ten years this amount is expected to double.
化工厂发生爆炸引起了害怕污染的巨大恐慌. The explosion at the chemical factory caused a major pollution scare.
化工厂发生爆炸引起了害怕污染的巨大恐慌。 The explosion at the chemical factory cause a major pollution scare.
计算机在检查了16000种可能的设计方案之后,选出了以最低的成本生产最多化工产品的工厂的设计方案。 After running through16, 000 possible designs, the computer picked out the plan for the plant that would produce the most chemicals at the lowest cost.