- 1. oil; lubricate
 - ♦ 这台机器该~了。 This machine needs oiling.
 - 2. refuel
 - ♦ 飞机要在上海降落~。 The plane will land in Shanghai for refuelling.
 - ♦ 空中~ in-flight (or air) refuelling
 - 3. make an extra effort
 - ♦ ~干 work with added vigour
 - ♦ ~! ~! Come on! Come on!
 - ♦ 观众为运动员~。 The spectators cheered the players on.