他考试失败的原因是他学习从来斗不够努力的翻译：He failed in the exam because he has never been hard enough 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

His examination failed because he never fight hard enough to learn

He failed in the exam because he has never been hard enough

He takes a test the defeat reason is he studies always fights insufficiently diligently

His examination of the reasons for the failure is that he has never Doo-enough effort learning

He failed in the exam because he has never been hard enough