A bullet goes from this gun with a velocity of 3000 feet per second.

此枪射出的子弹,其速度为每秒3000英尺.

《简明英汉词典》

30,000 degrees fahrenheit at 20,000 feet per second.

每秒钟以30,000华氏度穿过20,000英尺.

电影对白

Sound travels at 1100 feet per second in air.

声音在空气中以每秒1100英尺的速度传播.

互联网

Sound travels at 1,100 feet per second.

声音以每秒1,100英尺的速度传播.

互联网

Lois lane is falling accelerating at an intial rate of 32 feet per second per second.

Loislane从高空往下掉以每秒32英尺的初速度做自由落体加速.

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