Flight space: not over 1500 meters above sea level.

飞行空域：飞行高度不得超过海拔1500米。

youdao

She made her first and only space flight last September.

她去年9月进行了自己第一次也是唯一一次的太空飞行。

《柯林斯英汉双解大词典》

Underwater exploration is so much cheaper than space flight.

水下探索比太空飞行便宜多了。

youdao

And so begins the first powered flight of the experimental plane designed to take man to the edge of space.

VOA: special.2010.07.07

The results of the two short flights made space officials believe the Mercury program was ready for its first orbital flight.

VOA: special.2009.06.17

"Obviously there are a lot of people that are unhappy about the potential of altering the future of space flight."

VOA: special.2010.04.28

The variances in time of day, day of week, flight space availability, etc. were just too many for sales staff to handle.

FORBES: Simplify Big Data Or It'll Be Useless For Sales

He will be speaking about space flight, space exploration, space science and technology, environmental stewardship and educational awareness as it relates to seeing the Earth from Space.

ENGADGET: UrtheCast to stream live HD footage of Earth from ISS, like Stickam for space

"But that fits into the way he does business, " Pearlman said, noting Bezos' other venture into space flight, Blue Origins, which aims to make human space flight cheaper and easier.

CNN: Amazon chief plans to recover Apollo engines from seafloor