Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
Just my friend Mike and a few kids from school.
只有我的朋友Mike和学校里的几个伙伴。
A wise man thinks all that he says, a fool says all that he thinks.
智者思其所言，愚者言其所思。
It is a world of red sandy deserts (hence its name----the Red Planet),
红色行星），