The way in which people use social space reflects their social relationships and their ethnic identity.
人们使用社会空间的方式反映了他们的社会关系和民族身份。
In early space programs, such as the Apollo missions of the 1960s and 1970s, and in the Space Shuttle missions today, scientists developed objects for the astronauts to use on the moon and in space.
从20世纪60年代和70年代的阿波罗计划等早期太空计划,航天员研发了在月球上和太空中使用的物品。
They were difficult to use and took a lot of space in a library.
它们难以使用,还占用了图书馆很大的空间。
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