insouciance

n.漫不经心,无忧无虑

漠不关心；无忧无虑；不在乎

名词

1、They approached the crisis with the same insouciance that they had to everything else in life.
他们对待危机的态度和他们对待生活中的其他事情一样漠不关心。
2、He faced the difficulties with an insouciance that irritated his fellow colleagues.
他以一种让同事们不悦的漠不关心的态度面对困难。