Some of the contents of this gas, such as lead, not only pollute the atmosphere but cause actual harm to the health of people.
这种气体中的某些成分，比如铅，不仅污染大气，而且对人类身体健康也确实产生害处。
Some of the contents of this gas, such as lead, not only pollute the atmosphere but cause actual harm to the health of people.
这种气体中的某些成分，比如铅，不仅污染大气，而且对人类身体健康也确实产生害处。
应用推荐