His irresponsibility toward his work was known to all.大家都知道他对工作无责任感。His irresponsibility mocked my trust in him.他不负责任的态度辜负了我对他的信任。The students were criticized for their irresponsibility.这些学生因缺乏责任心而受到批评。It is the height of irresponsibility to make such comments.发表这样的评论真是不负责任到了极点。