Biogas
[机] 生物沼气
🗣️ 情景例句
This job is hard work.
这活儿太累人了。
What is she doing now?
她现在干些什么呢？
A few days later, she sent a boy to the workman to ask him if his name was Hans Bussman.
几天后，她派了一个男孩去问那人是否叫汉斯。巴斯曼。