Powell is not familiar with the researchers' method, but said he guesses that they are first heat-treating the sewage before they reap its resources.

Powell对研究者的方法并不熟知，但是他猜想他们在获取资源之前，应该是首先对污水进行热处理的。

youdao

Powell is not familiar with the researchers' method, but said he guesses that they are first heat-treating the sewage before they reap its resources.

Powell对研究者的方法并不熟知，但是他猜想他们在获取资源之前，应该是首先对污水进行热处理的。

youdao