He did not want to be an environment hazard anymore.

他一点也不想破坏环境了。

youdao

Presence of Rn, U and Pb in environment is a ubiquitous hazard to human health.

环境中的氡、铀和铅等有害微最元素严重危害人类健康。

youdao

Presence of Rn, U and Pb in environment is a ubiquitous hazard to human health.

环境中的氡、铀和铅等有害微最元素严重危害人类健康。

youdao