Valleys
n. 山谷( valley的名词复数 ); 流域; 溪谷
🗣️ 情景例句
What are you working on?
你在干什么？
who did George marry?
乔治结婚了吗？
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，