adj.不负责任的;不可靠的,缺乏责任心;[法律] 无责任能力的;无需对更高一级权力负责的;
例句:
Thick patchy fog and irresponsible driving were to blame.
局部浓雾和驾驶员不负责任是罪魁祸首。
Her irresponsible behaviour cost her father many sleepless nights.
她那不负责任的行为使她父亲许多夜不得安眠.
They are experienced sailors and certainly not irresponsible.
他们都是有经验的航海家,当然不可能不负责任.