irresponsible
adj
(of people, actions, etc) not showing a proper sense of responsibility (指人、 行为等)不负责任的, 没有责任感的
an irresponsible child 没有责任感的孩子* irresponsible behaviour 不负责任的行为
It is irresponsible of you not to prepare students for their exams. 你不帮助学生准备考 试就是不负责. Cf 参看 responsible 4.
Speak to your father and tell him that you are already doing well in the subject of your choice. If you like, remind him that many women have chosen to work in fields that were not used to accepting women. You can point out that Florence Nightingale opene