念书时住学生楼，极少自己做饭，所以尽管看到街角屋后常堆着大白菜，一日三餐也常吃大白菜，对大白菜并没有深刻的认识。
B-Time I-Time I-Time O B-Location I-Location I-Location O O O B-Person I-Person O B-Thing O O O O O O O B-Location I-Location I-Location I-Location O O O B-Thing I-Thing I-Thing O O O O O O O O B-Thing I-Thing I-Thing O O B-Thing I-Thing I-Thing O O O O O O O O O