While he was traveling in space, Yang spoke to two astronauts aboard the International Space Station, which is orbiting the earth, American astronaut Edward Lu and Russian cosmonaut Yuri Malenchenko.

在太空飞行时，杨利伟同环绕地球运行的国际空间站的两名宇航员进行了对话，他们是美国宇航员爱德华·卢和俄罗斯宇航员尤里·马林年科。

youdao

Dr Ralph Cordey, who is EADS Astrium's head of exploration and business, told BBC News that the concept of a gravity tug was actually first mooted by two Nasa astronauts, Edward Lu and Stanley Love, a few years ago.

BBC: British plan to tackle asteroids