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1·Correct decisions came when the referees were moving at a speed of about 2 meters per second.

当裁判以每秒两米的速度移动时，裁判做出了正确的判罚。

2·The axle connects to the outer arms of the Wheel, which begin to rotate at a speed of 1/8 of a revolution per minute.

车轴连接到这个车轮的外臂，外臂开始以每分钟1/8转的速度旋转。

3·It can fly at a speed of about 200 miles per hour.

它能以每小时200英里的速度飞行。

4·Since 1993, sea levels have risen at a speed of 3.2 cm every 10 years.

自1993年以来，海平面以每10年3.2厘米的速度上升。

5·Humpback whales swim at a speed of 1.6 kilometers an hour from Alaska to Hawaii.

座头鲸以每小时1.6公里的速度从阿拉斯加游到夏威夷。

6·The car travels at a speed of 80 miles an hour.

小汽车以每小时80英里的速度行驶。

7·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。

8·The bus is running at a speed of 50 miles an hour.

这辆车正以每小时50英里的速度行驶。

9·This buoyancy allows it to fly at a speed of 20 feet.

这种浮力使它们具有20英尺飞行速度。

10·The shooting stars are falling at a speed of 66 km per second.

该流星群速度可达每秒66公里。