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.

比较简单可能降落在空间探险公司身上，其调试良好联盟号飞船自从20世纪60年代以来已经以一种形式或另一种形式飞过——仅仅需要加装强大制动装置，大舷窗（毕竟每个人都坐在离窗户近地方）另外为重新进入加装好隔热层。

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

他开一种安全制动装置，可以在绳索断裂时防止电梯自由落体。

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

他一种安全制动装置， 可以在绳索断裂时防止电梯自由落体。

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

这个完全磁力系统使得挑战者过山车可以在没有物理制动装置情况下运行。

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，没有何制动装置，因为这完全是由重力驱动自由落体，并通过后续转弯和翻转减速。

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

24 岁时， 他火车空气制动器，这是一种简单高级火车制动装置。