N-COUNT When an astronaut goes on a spacewalk, he or she leaves the spacecraft and works outside it while floating in space. 太空行走
The odd tool dropped by a spacewalking astronaut.
宇航员进行太空行走时偶尔掉落的工具。
We do a lot of the spacewalking training in a very large swimming pool, about 40 feet deep.
我们在一个很大的大约有40英尺深的游泳池里进行大量的太空行走练习。
Spacewalking astronauts installed the new cupola in February 2010, adding a homey feel to the orbiting outpost.
2010年2月，天马行空的宇航员们为空间站安装了这座新的观景台，给这座轨道上的观察哨增添了家的感觉。
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