求翻译：部分英语教师甚至是中专学历，本来担任其他课程教学的老师转行教英语的，兼课、代课情况也存在是什么意思？

Part of the English teachers and even college educated , had served as teaching other teachers to teach English to switch , and puts in a lot , there are circumstances substitute

Some English teachers and even the colleges, it would have been in other courses teaching the teachers to teach English, of course, of course there are also

The partial English teacher is even the specialized middle school school record, holds the post of other curriculum teaching originally teacher changes professions to teach English, holds concurrent teaching jobs, serves as a substitute teacher the situation also to exist

Even some English teachers graduated from teacher career education for other courses taught in English, teaching, substitute or problems

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