This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a spiral shape.

这种以每秒数百公里的速度旋转的运动，可能会使圆盘上的物质呈现出螺旋形状。

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As they travel inland at speeds in excess of 60 feet a year, they merge with the rich grass and scattered trees of the savanna.

它们以每年超过60英尺的速度向内地迁移，融入了热带稀树大草原的丰富草地和零星的树木。

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They travel at speeds of up to 30 knots.

他们以高达30节的航速行进。

《柯林斯英汉双解大词典》

This is because orbital debris travels at speeds of thirty-two thousand kilometers an hour or more.

VOA: special.2009.04.01

Suppose we all go to a tall building and start throwing things at various times and various speeds.

假设我们都爬上一栋高楼,在不同时刻以不同速度抛出物体

耶鲁公开课 - 基础物理课程节选

And the experimenter is back there with the speed knob and at random intervals he just speeds up the tape of their heart and then slows it down.

实验者回到实验室，带着录音设备,随机地,他加速了心跳的录音,然后又慢下来。

耶鲁公开课 - 心理学导论课程节选

On one screen, quotes blink on and off at speeds barely visible to the human eye.

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Generally, comet debris can hit Earth's atmosphere at speeds as fast as 110, 000 miles per hour.

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The car can run at speeds up to 47 mph solely on battery power.

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