1.
A knuckle ball.
（球手投出的）不旋转球
2.
a left-arm spin bowler
投左手旋转球的投球手.
3.
Backspin: Reverse spin imparted by striking the ball with a downward movement of the racket.
下旋：向下挥动球拍击出的旋转球，使球回转。
4.
a baseball pitch thrown with little speed or spin.
投手投出的不旋转球。
5.
(eg in golf)strike(a ball)with a slice
（如在高尔夫球中）将（球）击成同侧旋转球.
6.
The spin given to a ball by striking it on one side or releasing it with a sharp twist.
旋球击于球侧使其产生的旋转运动或急速旋转球而放出手去产生的旋转运动
7.
Earth, going round and round, silently, rising the sun, and the moon.
地球啊，默默地旋转，旋转出太阳，旋转出月亮。
8.
the revolution of the earth on its axis round the sun
地球以太阳为轴的旋转.
9.
and put so much spin on the ball,
而且将球旋转得很厉害，
10.
Wheels, tops and the earth rotate.
轮子、陀螺和地球均旋转。
11.
The doctor asked the patient to rotate his eyes.
医生叫病人旋转眼球。
12.
impart spin to a cricket ball
使板球增加旋转力.
13.
whirling psychrometer
旋转式干湿球湿度计
14.
spherical union swivel
球面活管接旋转接头
15.
The earth turns round at a uniform rate.
地球以不变的速度旋转。
16.
The earth rotates from west to east.
地球从西向东旋转。
17.
The earth turns round from west to east.
地球由西向东旋转。
18.
any rotating body has an angular momentum about its center of mass; angular momentum makes the world go round.
角动量使地球在旋转。