Obviously, that will be the environmental pollution, which is causing harm to the land as well as ocean nowadays.

很明显，那将是环境污染，它正危及土地和海洋。

They produce much of the oxygen we breath, and are recruited to clean up environmental pollution, like oil spills, or to treat our waste water.

它们制造了大量我们呼吸的空气，还能用来应对石油泄漏等环境污染问题，或者用来处理污水。

But to me what's most interesting about this process is how it may enable fungi to help clean up environmental pollution in the soil...

但是这个过程对我来说最有趣的部分是它能够帮助清理土壤中的环境污染。