nonchalant /ˌnɑːnʃəˈlɑːnt/ adjective /ˌnɑːnʃəˈlɑːnt/
adjective
Learner's definition of NONCHALANT
[more nonchalant; most nonchalant]
: relaxed and calm in a way that shows that you do not care or are not worried about anything淡定的；无动于衷的 -
He was surprisingly nonchalant about winning the award.他赢得了奖项，却出人意料地平静。
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She faced the crowd with the nonchalant ease of an experienced speaker.她以一个老练演说家的姿态从容不迫地面对人群。
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The team may have been somewhat nonchalant at the beginning of the season, but they now know that they need to work hard.赛季伊始，这个球队表现得有些漫不经心，但现在他们知道该加把劲了。
— nonchalance
/ˌnɑːnʃəˈlɑːns/ noun [noncount]