笔名: Kevin 于October 28, 19115 10:04:30:

A jiffy bag synthroid cheapest prices In training, like in a real spacewalk, astronauts have to always keep an eye on their own and their crew mate’s safety. It’s tough. Learning to work in the void can be exhausting. But the training brings the astronauts closer to that most extraordinary dream: the chance to truly walk in space.

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