Yet Mark Uhran, assistant associate administrator for the ISS, refutes the criticism that the station hasn't done any useful research.
然而，国际空间站副主任助理马克·乌兰反驳了关于国际空间站没有做出有用研究的批评观点。
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Their departure leaves three space station residents, as well as Endeavour's six-man crew commanded by Mark Kelly, husband of wound Rep. Gabrielle Giffords.
Their departure leaves three space station residents, as well as Endeavour's six-man crew commanded by Mark Kelly, husband of wound Rep. Gabrielle Giffords. Endeavour's final flight ends June 1.