non-resident student的用法和樣例：
例句
- He was a nonresident student,but he used to lunch in at school.
他是走讀生，但中飯經常在學校里吃。 - Besides, two among the three were boarders in the high school, meaning that they were from the countryside, while the other was a day student from the county town.
在高中時，他們三人中有兩個是住宿生，也就是說，是從農村來的，另一個是縣城的走讀生。
