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。

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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.

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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.

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"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.

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