He developed a safety break that kept the elevator from freefalling of the rope broke.

他开发了一种安全动装置，可以在绳时防止电梯自由落体。

He developed a safety brake that kept the elevator from freefalling if the rope broke.

他发明了一种安全动装置， 可以在绳时防止电梯自由落体。

This entirely magnetic system allows Defiance to operate without any physical braking mechanisms.

这个全磁力系统使得挑战者过山车可以在没有动装置的情况下运行。

At the age of 24, he invented the air brake for trains, which is a simple advanced train braking device.

24 岁时， 他发明了火车空气动器，这是一种简单的高级火车动装置。

To this point, there's no braking, as it's a total freefall powered by gravity and slowed down by the ride's later turns and inversions.

到目前为止，没有任何动装置，因为这全是由重力驱动的自由落体，并通过后续的转弯和翻转减速。

The easier task probably falls to Space Adventures, whose well-tested Soyuzcapsules-which have been flying, in one form or another, since the 1960s-require a beefier communications system, larger portholes (everyone wants a window seat, after all) and a better heat shield for re-entry.

比较简单的任务可能降落在空间探险公司身上，其调试良好的联盟号飞船自从20世纪60年代以来已经以一种形式或另一种形式飞过——仅仅需要加装强大的动装置，大的舷窗（毕竟每个人都想坐在离窗户近的地方）另外为重新进入加装好的隔热层。