太空旅行；航天之旅
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太空旅行；航天之旅；太空旅行；航天之旅
a trip or voyage through outer space
She dreamed of a space journey to Mars.
她梦想着去火星的太空旅行。
太空旅行；航天之旅
a trip or voyage through outer space
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Dictionary facts from AI_SUPPLEMENT.