national costume
noun🔊/ˌnæʃnəl ˈkɒstjuːm/
🔊/ˌnæʃnəl ˈkɑːstuːm/
[countable, uncountable] (also national dress [uncountable])
the clothes traditionally worn by people from a particular country, especially on special occasions or for formal ceremonies （某一国家的）民族服装 Some of the singers wore the Welsh national costume. 一些歌手穿了威尔士的民族服装。