In thirty years from now the United States should have a manned spacecraft on Mars.

从现在开始30年内，美国会把载人航天器送上火星。

《柯林斯英汉双解大词典》

I think that would have to be a manned mission to Mars.

我觉得肯定是载人火星任务。

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The team also decided to go with a manned turret for maximum situational awareness.

该小组还决定使用一个最大的态势感知载人炮塔。

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Joan Johnson-Freese of the U.S.Naval War College in Rhode Island says that even without a manned Moon mission, the U.S.still will be the biggest player in space.

VOA: standard.2010.04.21

A budget proposal by President Obama cancels the American space agencys plans for manned spaceflights to a lunar station.

VOA: special.2010.03.02

The first manned flight of project Mercury was a complete success.

VOA: special.2009.06.17

The Cold War produced supersonic jets, interstate highways, a manned lunar landing and the Internet.

FORBES: Magazine Article

There is uncertainty in sending a manned mission to the moon, yet that happened.

FORBES: The Post-Normal Seduction of Climate Science

Currently, Nasa has small-scale studies but no plans for a manned mission to Mars.

BBC: Manned flight to Mars in 2014?