students in grades的用法和樣例：
例句
- We aim to double the number of young people in full-time study.
我們計劃將全職學生的數量增加一倍。 - With the decreasing of students" quality in such schools, students become study-wearied more and more seriously, impeding the development of secondary education.
隨著中等職業教育生源質量的不斷下滑，中職學生厭學的現象越來越嚴重，已經對我國中等職業教育的發展產生了阻礙。
