fix sth on 全神贯注于

fix sth in one's mind 牢记

fix sth up 装饰

fix sth on sb 全神贯注于

fix sth on firmly 把…牢牢地装上

fix sth firmly to sth 系〔拴

ask someone to fix sth 叫某人修理某物

fix uprepair sth 修理

fix up sth 修好某物

fix sb with sth 凝视某人