1·More recently, companies have begun to plan more affordable "suborbital" flights—briefer ventures just to the edge of space's vast darkness.
最近，一些公司已经开始计划更经济实惠的“亚轨道”飞行——在太空无际黑暗的边缘进行更短时间的冒险。
2·But more recently, companies have begun to plan more affordable "suborbital" flights—briefer ventures just to the edge of space's vast darkness.
但是最近，公司已经开始计划更便宜的“亚轨道”飞行，在太空无际黑暗的边缘进行更短时间的冒险。
3·You'll also have to be able to create a safe and enjoyable commercial suborbital space flight experience for your passengers.
还要能够为乘客创造出安全和愉快的亚轨道商业飞行体验。
4·But his suborbital hop lasted just 15 minutes.
但是他的亚轨道飞行仅仅持续了15分钟。
5·The rocket is Ares I-X? A suborbital prototype for the Ares I rocket NASA plans to use to launch its shuttle successor, the Orion spacecraft.
这次发射的火箭“战神i - X”是“战神i”(Ares I)的亚轨道原型机，美国国家航空航天局计划使用“战神i”发射猎户座太空船。