寄宿生和走读生boarders and day pupils这所学校有寄宿生300人,走读生150人.This school has 300 boarders and 150 day pupils.他是走读生, 但中饭经常在学校里吃.He was a nonresident student, but he used to lunch in at school....

“走读生”的英语可以翻译为：extern ...