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]
打开
dǎ kāiㄉㄚˇ ㄎㄞ
to open; to show (a ticket); to turn on; to switch on[cedict]