Methanometer
甲烷计; 沼气检定器
🗣️ 情景例句
My final test is worth half my grade.
我的期末考试结果占我总成绩的一半。
Never too late to repent.
过则勿惮改。
The fact that the policeman was prejudiced against foreigners could not be recorded in the official files.
警察歧视外国人的事在官方档案中不可能加以记载，