欧洲航天局，俄罗斯联邦航天局和美国宇航局已分别投入到这样一门手艺没有成功数十亿英镑。
The European Space Agency (ESA), the Russian Federal Space Agency (RKA) and Nasa have each poured billions of pounds into such a craft without success.
两国共同签署了《中国国家航天局和俄罗斯联邦航天局关于联合探测火星-火卫一合作的协议》，并确定双方将于2009年联合对火星及其卫星“火卫一”进行探测。
The two countries announced a joint effort to explore Mars and one of its moons in 2009.
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