Language parts are like helicopter controls: you can't readily add (or change) them with affecting all the other parts.

语言部件就像直升飞机操纵装置一样：您不能轻易地对其进行添加(或更改)，因为会对其他的部件产生影响。

youdao

Sensors and active controls are used to detect the onset of dangerous vibrations, which also limit the forward speed of a helicopter.

传感器和“主动控制”被用于侦测危险震颤的先兆迹象，而这种危险震颤也会限制直升机的前飞速度。

youdao

When the helicopter began getting away from the pilot he pulled back on the cyclic which controls the pitch of the rotor blades only to find the aircraft unresponsive.

当直升机开始与飞行员脱离的时候，他向后扳用来控制转翼叶片变矩的操纵杆，但直升机毫无反应。

youdao

Mr McRae, 39, was at the controls of the helicopter when it crashed near his home in Lanark in September 2007.

BBC: Boy had no permission to be on Colin McRae helicopter

When the helicopter began getting away from the pilot, he pulled back on the cyclic, which controls the pitch of the rotor blades, only to find the aircraft unresponsive.

NEWYORKER: Getting Bin Laden