Methanogen
n. [微]产烷生物
🗣️ 情景例句
I'd like to introduce you to some of my friends.
我想介绍你认识一些我的朋友。
I ought to keep cool.
我应该保持冷静。
He did not know from which part of Africa his ancestor had come.
他不知道祖先来自非洲的什么地方。