英语口语900句 16.08.对话.3.环境污染
时间：2019-01-21 作者：英语课 分类：英语口语900句
Well,no one could survive without water.But you see pollution has been making more and more water unable for drinking.
Yeah.Water pollution has for a long time been a major concern among the environmental issues.
But what are the sources of water pollution?
They could generally be divided into two categories: direct and indirect contaminant sources.
Well,direct ones are pollution directly from factories,refineries,waste treatment plants etc.,aren't they?
Yeah.They are emitted directly into urban water supplies.
But what about the indirect ones?
Indirect sources include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rainwater.
I see.for the sake of us all,we should be an active participator in the prevention of it.
Sure.it's an issue asking for everyone's participation 1.
- Some of the magic tricks called for audience participation.有些魔术要求有观众的参与。
- The scheme aims to encourage increased participation in sporting activities.这个方案旨在鼓励大众更多地参与体育活动。