This orbiting telescope is the largest optical instrument in space.这种轨道望远镜是宇宙中最大的光学仪器.Let's pretend we're on the spaceship orbiting round the earth!让我们假装是在沿轨道绕地球运转的宇宙飞船上!Twenty incoming flights were stacked up ...
a linkup of two orbiting spacecraft.轨道上两个太空飞行器的会合They have docked a robot module alongside the orbiting space station...他们已经将一个自动操作舱与沿轨道运行的空间站并行对接上了。Let's pretend we're on the spaceship orbiting round the earth...