Skylifter plans to use several such drives to control the craft's horizontal motion and to aid a buoyancy-control system within the envelope in moving the vehicle up and down.

Skylifter计划使用数个上述装置来控制飞行器的水平运动，并在表膜层内置浮力控制系统来调节垂直升降。

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Skylifter plans to use several such drives to control the craft’s horizontal motion, and also to aid a buoyancy-control system within the envelope in moving the vehicle up and down.

Skylifter计划使用若干这种驱动器来控制飞船的水平运动，同时也辅助安装在气球内部的浮力控制系统操纵飞艇的升降。

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Evidently, there is another motion to be concerned with and that is the propagation of the modulation envelope.

显然，还应当考虑另外一种运动，那就是调制包络的传播。

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What this means for consumers is that Leap Motion will be able to improve their software and developers will push the envelope with their apps without the user needing to upgrade their physical device.

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