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。
The exit velocity is typically in the low-hundreds of feet per second.
出口速度一般在每秒几百英尺左右。
A startled armadillo jumps straight into the air with an initial velocity of 18 feet per second.
一只受惊的犰狳以18英尺每秒的速度跳向空中。
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
咳嗽可导致气管的空气通过的速度超过音速—每秒超过一千英尺！
In this case, the 33 megajoules launched the shot 5,500 feet per second, exceeding the speed of sound and releasing a sonic boom.
如若这样，那么3千3百万焦耳发射出的炮弹速度高达每秒5500英尺，这一速度超越了音速，会产生音爆。
In this case, the 33 megajoules launched the shot 5, 500 feet per second, exceeding the speed of sound and releasing a sonic boom.
如若这样，那么3千3百万焦耳发射出的炮弹速度高达每秒5500英尺，这一速度超越了音速，会产生音爆。
To win the competition, a vehicle has to climb all the way up the kilometre-long cable, travelling at an average speed of five meters (16 feet) per second.
赢得奖金的标准是，设计者的机械必须能够全程攀上长达一公里的轨道，同时平均速度不能低于每秒5米（16英尺）。
With all inlet doors tightly shut, at 3.24 Mach, the J-58s are more like ramjets now, gulping 100, 000 cubic feet of air per second.
我们正以3.24马赫飞行，所有的进气口都紧紧关闭，两个J-58引擎就像火箭推进 器一样全速运转 -每秒吞吐100000立方英尺的空气。
When threatened, they can drop from a tree into the water and sprint, upright, about 5 feet (1.5 meters) per second across the surface.
当遇到危险，它们就从树上跳到水里，然后直立身体，以每秒5英尺(1.5米)的速度在水面上奔跑。
Sound travels through air in waves about 1,115 feet (340 meters) per second.
声音以声波形式在空气中传播，速度约为每秒1，115英尺 （340米）。
According to the capacity badge the elevator runs up to 350 feet per minute or 1.8 metres per second.
根据负载量告示牌，电梯最高可以每分钟350呎或每秒钟1.8米运行。
According to the capacity badge the elevator runs up to 350 feet per minute or 1.8 metres per second.
根据负载量告示牌，电梯最高可以每分钟350呎或每秒钟1.8米运行。
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