Virgin Galactic's WhiteKnightTwo/SpaceShipTwo launch system is still in testing and she says it is up to them when they decide it is safe to fly tourists to the edge of space.
维京银河系的发射系统目前仍在检测，她说直到他们觉得安全了才会载着游客在太空中翱翔。
Virgin Galactic's WhiteKnightTwo/SpaceShipTwo launch system is still in testing and she says it is up to them when they decide it is safe to fly tourists to the edge of space.
维京银河系的发射系统目前仍在检测，她说直到他们觉得安全了才会载着游客在太空中翱翔。
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