Sepsometer
空气有机质测定计
🗣️ 情景例句
Oh, let me think for a minute.
哦，让我想一下。
I'm not really sure.
我不太清楚。
But suppose the earth could be covered with sensors spaced one foot apart,
假设地球上可以布满传感器，每个相隔1英尺，