One is black carbon and the other is ozone, which is vital for blocking ultraviolet rays in the stratosphere but hazardous in the bits of the atmosphere where plants live and people have to breathe.

其一是黑碳，另一样是臭氧，后者对阻止平流层的紫外线起着至关重要的作用，但对大气中的植物和人类有害。

youdao

For instance, Pennsylvania has opposed designating the waste from Hatfield's Ferry and other power plants as hazardous.

例如，宾夕法尼亚州已经反对将哈特菲尔德轮渡公司和其他一些电厂的排放物视作是有危险的。

youdao

The reasons of ground hardening in a large area around working areas in hazardous waste treatment plants were analyzed.

分析危险废物处理厂生产区周围进行大面积地面硬化的原因，提出加大厂区绿化的措施。

youdao

They refused to name the hazardous plants until activists pieced the list together themselves and went public with it.

CNN: Warning -- this garbage is dangerous

New companies often send hazardous waste out of their plants because they have not yet invested in on-site treatment equipment, which allows them to recycle some waste.

NPR: Solar Industry Grapples With Hazardous Wastes

These are the first national standards to require use of modern control technologies to reduce mercury, arsenic, lead, hydrochloric acid and other hazardous air pollutants from coal plants.

WHITEHOUSE: Energy and Environment Latest News | The White House