Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
And it hung over Robbie's crib.
Robbie的小床也有过。
A chain is no stronger than its weakest link.
链条的坚固程度取决于它最薄弱的环节。
We're out of a lot of the items.
有好几项都缺货了。