Quadron
季环素
🗣️ 情景例句
I want to get my work finished by tomorrow.
我想在明天前完成工作。
The frog is frightened at the sight of a snake.
那只青蛙因为看到了蛇而战抖。
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，