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frontier SimpleWikiWiktionaryGoogle検索CollinsCambridgeLongmanLongman英和Learners 【 80967 】 【意味】 "[名詞] a wilderness at the edge of a settled area of a country [例] the individualism of the frontier in Andrew Jackson's day [例] The frontier was a dangerous place. [例] They lived on the frontier where they could hunt and fish. [意味] 辺境, フロンティア, 辺境地帯, 辺塞, 辺疆, 辺隅 ; [上位語] wilderness, wild ; [同義語群] 08505402-n [名詞] an international boundary or the area (often fortified) immediately inside the boundary [例] The frontier was heavily guarded. [例] The frontier between the two countries is a dangerous place. [例] They lived on the frontier of the unknown. [意味] 国境, 辺境, 境界, 限界, 国境線, 境界線, 極限, 限り ; [上位語] boundary, bounds, bound ; [下位語] Triple Frontier ; [同義語群] 08501114-n [名詞] an undeveloped field of study; a topic inviting research and development [例] he worked at the frontier of brain science [例] The frontier of science is always expanding. [例] They are pioneers in the frontier of genetic engineering. [意味] 最前線 ; [上位語] subject area, field of study, subject field, discipline, subject, bailiwick, study, field ; [同義語群] 05998052-n"