grease sb.'s fist

例句：

1. 1.The car engine needs grease to keep it running smoothly.
   汽车发动机需要润滑油来保持顺畅运行。
2. 2.The chef used a special kind of grease to make the cake extra moist.
   厨师用一种特殊的油使蛋糕更加湿润。
3. 3. The machine requires regular grease changes to prevent wear and tear.
   机器需要定期更换润滑油以防止磨损。