其次，睡眠时间不足，上课有时感到疲倦的翻译：Secondly, insufficient sleep time in class, sometimes feel tired 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

Second, lack of sleep, tired and sometimes class

Secondly, insufficient sleep time in class, sometimes feel tired

Sometimes next, the sleep time is insufficient, attends class feels weary

This was followed by sleep, and lack of time, sometimes classes are tired

Secondly, insufficient sleep time in class, sometimes feel tired