Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
No problem. I'm glad to help.
小事情，我很高兴这样做。
Have you drunk any fruit juice.
你喝过果汁吗？
they must be sedulously tended, if the vivifying fruits are to be at hand when needed.
要想在需要的时候可随手摘取充满生机的果实，还需要勤勉地护理。