单词:space time dilemma
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US Law Could Block Astronaut Activities on Space Station 美国法律禁止宇航员在空间站活动 Now that the U.S. space shuttle Discovery is back on Earth, future shuttle missions are postponed
Last time we talked about how astronauts eat and drink under weightless conditions in space. Today we'll cover the next question kids love to ask-how do astronauts go to the bathroom in space? It may sound silly, but it's really a good question, beca
It may sound silly, but its really a good question, because weightlessness does make a visit to the latrine a tricky proposition. Weightlessness poses two main problems in the bathroom. The first is that an astronaut could drift away from the bowl at
Business 商业 Iberdrola: The energy-storage question Iberdrola:能源短缺问题 A trail-blazing utility that against full distributed energy. 一个风能先驱对电池持有怀疑的态度。 One of Ignacio Galan's early jobs as an engineer w
Broadcast: June 4, 2003 By Paul Thompson VOICE ONE: This is Ray Freeman. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today, we tell about how astronauts prepa
Working in Project Space One of the givens in David Allens Getting Things Done is that you cant do a project. Instead, Allen recommends you break projects down into immediate next actions, discrete doable chunks that can be cranked through with a min