By the time of the Apollo program, the quality and variety of food increased even further.
到“阿波罗”计划时，食物质量和花样都进一步提高和增多。
NASA has not flown astronauts beyond low-Earth orbit since the Apollo program, in the 1970s.
美国航空航天局自20世纪70年代的“阿波罗计划”以来，就没有进行过超出地球低轨道的载人航空活动。
NASA says astronauts would not fly onboard until at least 2016. NASA has not flown astronauts beyond low-Earth orbit since the Apollo program, in the 1970s.
美国宇航局说，宇航员最早将于2016开始太空飞行。美国航空航天局自20世纪70年代的“阿波罗计划”以来，就没有进行过超出地球低轨道的载人航空活动。
On the one hand, the Apollo program truly was a spectacular success, but it also marked the end of progress - no human has traveled more than 400 miles away from Earth since 1975.
一方面阿波罗计划确实是一个巨大的成功，但是它同时标志着进步的终结——从1975年起人类就再也没有涉足过地球400英里(643公里)外的地方了。
On the one hand, the Apollo program truly was a spectacular success, but it also marked the end of progress - no human has traveled more than 400 miles away from Earth since 1975.
一方面阿波罗计划确实是一个巨大的成功，但是它同时标志着进步的终结——从1975年起人类就再也没有涉足过地球400英里(643公里)外的地方了。
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