a time; everywhere; turn; all over; one time[cedict]
然后
rán hòuㄖㄢˊ ㄏㄡˋ
after; then (afterwards); after that; afterwards[cedict]
本
běnㄅㄣˇ
roots or stems of plants; origin; source; this; the current; root; foundation; basis; (classifier for books, periodicals, files etc)[cedict]
上
shàngㄕㄤˋ
on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]