求翻译：我们进行了一次中学生睡眠质量调查，经结果发现，中学生大多数人睡不足七小时，有些学生甚至不足六小时。这个情况大大低于八小时的睡眠标准。是什么意思？

We conducted a secondary sleep quality survey, the results showed that most high school students sleep less than seven hours, some students even less than six hours. This situation was very much lower than the standard eight hours of sleep.

We have carried out a survey among secondary school students, the results revealed that quality sleep most people sleep less than 7 hours, secondary school students, some students even less than 6 hours. This situation has significantly less than 8 hours of sleep.

We have carried on a middle-school student sleep quality investigation, discovered after the result, the middle-school student majority people rest the insufficient seven hours, some student even insufficient six hours.This situation is lower than eight hour sleep standards greatly.

We conducted a survey of sleeping quality of middle school students, found that less than seven hours of sleep most of middle school students, some of them even less than six hours. This is significantly lower than the eight hours of sleep standards.

We conducted a survey of sleeping quality of middle school students, found that less than seven hours of sleep most of middle school students, some of them even less than six hours. This is significantly lower than the eight hours of sleep standards.