The professor said: "It is a real mystery how these creatures are able to live without oxygen because until now we thought only bacteria could do this."

这真是难以理解的事情。因为此前我们知道仅有细菌可以在无氧状态下存活。

youdao

The professor said: "It is a real mystery how these creatures are able to live without oxygen because until now we thought only bacteria could do this."

这真是难以理解的事情。因为此前我们知道仅有细菌可以在无氧状态下存活。

youdao