Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
In a word, we'll provide you with all good service.
我们将为你们提供最好的服务。
Hush! Talk quietly.
嘘！请小声讲话。
She sang perfectly in the hall last night.
她昨晚在大厅唱得非常好。