Nonchalance

名词 n.1.漠不关心,无动于衷,冷淡 declining the offer with cool nonchalance冷淡地拒绝这一提议He conceals his worries behind a mask of nonchalance.他装作若无其事,借以掩饰内心的不安。She shrugged, feigning nonchalance.她耸耸肩，装出一副无所谓的样子。