“如果你把一个气球吹起来以后，再拉长气球的脖子，就可以操纵音调，”威尔逊说。
"If you take a balloon and blow it up, you can manipulate the pitch by pulling the neck," Wilson says.
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。
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.
随着它的移动，鼠标要通过操纵滚动条对其进行捕捉，最终气球与“HP”重和。
As it moves, the mouse is used to capture its scroll bar, finally, the balloon And "HP"conincide.
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