at a speed of

Light travels at a speed of 300,000 km per second.

光以每秒30万千米的速度传播.

The filaments are expanding into space at a speed of roughly 5,000 kilometers per second.

这些纤维状星云物质以每秒大约5000公里的速度向宇宙空间扩展.

It is measured at a speed of 2 m / s under load intensity of 1.96 Mpa.

它是在载荷集度为1.96Mpa和速度为2m/s时测得的.

Raindrops fall at a speed of about 500 to 1,000 feet a minute.

雨点以每分钟大约五百到一千英尺的速度下降.

They streaked down through the lunar shy at a speed of 3,700 miles an hour.

他们以一小时三千七百英里的速度向下掠过月球天空.

A Boeing 747 jumbo jet airliner lands at a speed of 160 m / s.

一架波音747巨型喷气式班机以160米/秒的速度着陆.

He drives his car at a speed of 80 kilometers per hour.

他开车以每小时80公里的速度行驶.

The car runs at a speed of sixty miles an hour.

那辆汽车以每小时六十英里的速度行驶.

The train is travelling at a speed of sixty miles an hour.

火车正以每小时六十英里的速度行驶.

The train is running at a speed of 70 miles an hour.

火车正以时速七十哩行驶着.

The plane is flying at a speed of 200 miles an hour.

飞机正以每小时二百英里的速度飞行.

The car went at a speed of 100 kilometers an hour.

那辆车子是以每小时100公里的速度开过去了.

He drove at a speed of sixty miles per hour.

他以每小时60英里的速度开车.

The airplane flew at a speed of 500 miles an hour.

飞机以每小时500英里的速度飞行.

We're driving at a speed of about 50 miles each hour.

我们以每小时大约50英里的速度驾车前进.