to (a place); until (a time); up to; to go; to arrive[cedict]
電腦
diàn nǎoㄉㄧㄢˋ ㄋㄠˇ
computer[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]
敲
qiāoㄑㄧㄠ
extort; knock; to strike; to knock (at a door); to hit[cedict]