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]
以后
yǐ hòuㄧˇ ㄏㄡˋ
after; later; afterwards; following; later on; in the future[cedict]
再
zàiㄗㄞˋ
again; once more; re-; second; another; then (after sth, and not until then)[cedict]