unconcerned
adj. 不关心的；无关的；无忧虑的
例句
Young people are often unconcerned with political issues.
青年人对政治问题往往漠不关心。
《牛津词典》
Paul was unconcerned about what he had done.
保罗对自己所做过的事情并不在意。
《柯林斯英汉双解大词典》
He drove on, apparently unconcerned about the noise the engine was making.
他继续驾车前进，对发动机发出的噪声显然毫不在意。
