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]
我
wǒㄨㄛˇ
I; me; my[cedict]
但
dànㄉㄢˋ
but; yet; however; only; merely; still[cedict]
实际上
shí jì shàngㄕˊ ㄐㄧˋ ㄕㄤˋ
in fact; in reality; as a matter of fact; in practice[cedict]