生物学处理过程的另一个好处是它无需加热或冷却，而且无有毒化学品。

Another advantage of the biological system is that it requires no heating or cooling, and no toxic chemicals.

youdao

生物学处理过程的另一个好处是它无需加热或冷却，而且无有毒化学品。

Another advantage of the biological system is that it requires no heating or cooling, and no toxic chemicals.

youdao