上图为混入土壤中难降解的塑料薄膜。

This chart shows us that the plastic can't break down into the soil.

youdao

难降解废水一直是水处理领域所关注的热点和难点。

The refractory wastewater is always the focus in wastewater treatment field.

youdao

难降解废水一直是水处理领域所关注的热点和难点。

The refractory wastewater is always the focus in wastewater treatment field.

youdao