Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
Are you carrying any items that need to be declared?
你没有携带需要申报的东西吗？
After I get dressed,I have breakfast.
在我穿好衣服后，我吃早餐。
Who's that boy over there?
那边的那个男孩是谁？