Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
I think it's about time we got going.
我想差不多是告辞的时候了。
Good morning, ladies and gentlemen. It's very satisfying to see so many of you here.
各位女士各位先生，早上好，在这里见到你们大家使人感到非常满意。
Past experience has taught us that certain accomplishments are beyond attainment.
以往的经验告诉我们有些事是办不到的。