chemicals

1.

Chemicals in the factory's sewage system have changed the ecology of the whole area.

这座工厂排出的化学物质改变了整个地区的生态。

2.

Mr. Chen used no (didn't use any) chemicals on his fruit.

陈先生的水果不使用农药。

3.

It won't hurt you, but chemicals will.

它不会伤害你，但是农药会。

4.

After running through16,000 possible designs, the electronic computer picked out the plan for the plant that would produce the most chemicals at the lowest cost accompanied by a set of exact specifications.

在快速处理了16000种可能的设计之后，电子计算机挑选出建一个以最低成本生产最多化学产品的工厂的计划，并附有一份详细说明书。

5.

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.

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。

6.

Petrochemicals today account for one fourth of all the chemicals made, in ten years this amount is expected to double.

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。

7.

He demonstrated the principles with chemicals and test tubes.

他借助化学药品和试管讲解了这些原理。