They were the first two men to walk in space.

他们俩是最早在太空漫步的人。

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Zhai Zhigang is the first Chinese to walk in space.

翟志刚是第一个在太空行走的中国人。

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Several months later a similar feat was performed by the first American astronaut to walk in space.

几个月后，美国第一个在太空行走的宇航员也完成了类似的壮举。

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But earlier,Buzz Aldrin the second man to walk on the moon took part in a NASA news conference where he pushed for a new round of space exploration, with the goal of sending astronauts to Mars.

VOA: standard.2009.07.20

Edward White became the first U.S. astronaut to walk in space when he stepped outside his Gemini 4 spacecraft.

CNN: Tuesday,

Sullivan (the first American woman to walk in space).

ENGADGET

In addition city plans say that by 2015, 90% of residents will be able to walk to a green space in just 15 minutes.

BBC: What Copenhagen can teach the world