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race; tribe; ethnic group
species; genus; family
stellar population (i.e. population I, II and III)
種族ごとに独自の文化がある。
Each ethnic group has its own distinct culture.
異なる種族が共存する社会を目指す。
Aiming for a society where different ethnic groups coexist.
この部族は古くから同じ種族の人々と暮らしてきた。
This tribe has long lived together with people of the same ethnic group.