pressure grease gun

例句：

1. 1.We used a pressure grease gun to lubricate the gears.
   我们用压力润滑枪给齿轮上油。
2. 2.The mechanic used a pressure grease gun to repair the engine.
   机械师用压力润滑枪修理了引擎。
3. 3.Pressure grease guns are essential tools for maintaining machinery.
   压力润滑枪是维护机械设备必不可少的工具。