Lie on the bed and lift your leg at the Angle of 45 degree, then bent your knees slowly and then return to the original position. Repeat this move for 100 times.

平躺在床上，提起腿到45角位置，再慢慢地弯曲膝盖，然后恢复到最初的平躺状态，这样是1轮，重复这个运动100次。

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Dr Smith’s design can compensate for changes in the angle or position of the coils, allowing a user to move around freely.

史密斯博士的设计能补偿线圈角度、位置变化带来的影响，使使用者能够自由的走动。

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The torch installed at the end of the wrist can move at the fixed point to satisfy the independent control of the torch angle and travel angel.

安装在手腕机构上的焊枪可以实现焊枪末端固定的运动，从而实现对焊枪工作角与行走角的解耦控制。

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As the capsule thunders downwards, it ejects ballast blocks to move its centre of gravity and tilt its angle of attack.

BBC: Mars Curiosity rover success depends on 'crazy' landing

The control surfaces, acting independently or together with a variable angle of attack of up to 20 degrees (front) and 40 degrees (rear), move the car's center of aerodynamic balance around to compensate for the forces of pitch, roll, yaw and high-speed lift.

WSJ: Pagani Huayra Review: If Da Vinci Made a Sports Car | Rumble Seat by Dan Neil