the trait of remaining calm and seeming not to care; a casual lack of concern
同义词：unconcern, indifference
nonchalance例句
He conceals his worries behind a mask of nonchalance.
他装作若无其事，藉以掩饰内心的不安。
nonchalance详细解释
non.cha.lance n.（名词）Casual lack of concern:冷漠的不关心的态度：例句：.The contemptuous nonchalance of her trailed hand irritated him.(Elizabeth Bowen).她的懒洋洋的手所显示出的蔑视而又漠不关心的态度激怒了他.(伊丽莎白·鲍恩)
