因为他缺少睡眠而不能在课上认真听课的翻译：Because of his lack of sleep and not serious in class lectures 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

Can not sleep because of his lack of serious lectures in class

Because of his lack of sleep and not serious in class lectures

But because he lacks the sleep not to be able to attend a lecture earnestly in the class

Because of his lack of sleep in class cannot be seriously 174,315

Because of his lack of sleep and not serious in class lectures