求翻译：因为学生对教师的期待比较高，所以学生在遇到问题时总是希望通过老师来得到满意的答案。而教师始终是一个普通的工作者，不可能对所有问题都事先学习和掌握是什么意思？

Because the students expect of teachers is relatively high, so students always hope in the face of problems by the teacher to get a satisfactory answer. The teacher is always an ordinary worker, not on all issues prior to study and master

Because the student in the teacher's expectations, so students at relatively high when a problem is encountered by teachers always want to find satisfactory answers. The teacher is always an ordinary workers, it is not possible to advance learning and mastering all of the problems

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Because the teacher to student expectations high, so the students experience problems always want teachers to be satisfied with the answer. And teachers always is an ordinary worker, it is not possible on all issues prior to learn and master

Because of student teachers expect higher, so always encountered problems of students want teachers to get satisfactory answers. And teachers always is an ordinary worker, it is not possible on all issues prior to learn and master