Harry potter author JK rowling, it is very popular in primary and middle school students.
哈利·波特的作者是JK罗琳，它很受中小学生的欢迎。
Overweight burden of study has become the pressure on the primary and middle school students.
过重学习负担已成为压迫中小学生生存的外在力量。
I taught English to primary school and middle school students.
我教过小学生和中学生英语。
I taught English to primary school and middle school students.
我教过小学生和中学生英语。
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