求翻译：绝大部分学生英语基础相当差，再加上中专入学免试门槛低，有些因为某种原因未能完成九年义务教育的学生也可入学，因此良莠不齐的现象每校每班都存在。是什么意思？

Most students basic English is very poor , plus secondary enrollment exemption threshold is low , some for some reason failed to complete the nine-year compulsory education students are enrolled in , therefore the phenomenon of mixed class every school there .

Most students foundation in English is very poor, coupled with secondary school enrolment exemption Threshold low, some for some reason could not be completed 9 years of compulsory education is also provided to students enrolled in school, the great disparity in each school each class exist.

The major part student English foundation serves as a petty government official, in addition the specialized middle school matriculation is exempt from taking an examination the threshold to be low, some because some kind of reason has not been able to complete nine year compulsory educations the st

Most of the students English is very poor, coupled with a low threshold for secondary school entrance examination, some for some reason fails to complete the nine-year compulsory education of students may also attend, so bad phenomena exist in each class in each school.

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