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1·They say it could be reached by an unmanned spaceship before the end of the century in time for people alive today to see it.

他们说，在本世纪末之前，无人驾驶的宇宙飞船就能到达那里，让今天活着的人们及时看到它。

2·We need to have more tests of the unmanned spaceship.

我们需要有更多的测试无人飞船。

3·By design, the heavy-duty spaceship Progress M-24, in unmanned operating mode, can perform automated docking with the orbital station.

按设计，“进步M—24”号载重飞船可同轨道站在无人操纵的情况下进行自动对接。

4·Our 'Progress 39P' unmanned resupply spaceship on final approach for docking this past Sunday.

上个周日，我们的无人驾驶补给飞船“Progress 39P”与空间站对接。