primary and middle school students的用法和樣例：
例句
- Overweight burden of study has become the pressure on the primaryand middle school students.
過(guò)重學(xué)習負擔已成為壓迫中小學(xué)生生存的外在力量。 - This text tries to make some studies in the methods of ducting according to the primary and middle school students' mind and body development.
本文試圖根據中小學(xué)生身心發(fā)展的特點(diǎn)在導入方法上作一些探討。
