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。

youdao

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。

youdao

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。

youdao

thirty-six feet per second up. Very smooth, very quiet ride."

VOA: special.2009.07.15

It galloped toward the planet's core, accelerating at gravity's constant 32 feet per second per second.

NPR: Defying Gravity, and Odds, in New Orleans

Seventy-five thousand tons dead-weight rushing through the fog at the rate of fifty feet per second, had hurled itself at an iceberg.

NEWYORKER: Unsinkable

On Friday evening, the Corps said it would open the spillway once river flows reach 1.5 million cubic feet per second.

CNN: STORY HIGHLIGHTS