lower grade student的用法和樣例：
例句
- Many algebra teachers expressed concern about their use in the low lower grades.
很多代數學(xué)老師對低年級學(xué)生使用計算器表示了憂(yōu)慮。 - The key objects of prevention and treatment will be the students of the Mongolian language specialities and lower grade.
蒙語(yǔ)專(zhuān)業(yè)及低年級學(xué)生應作為重點(diǎn)防治對象。
