irrigation grease

例句：

1. 1.The farmers used to use irrigation grease to water their crops.
   农民过去用灌溉油来给作物浇水。
2. 2. The irrigation grease was a vital component in the irrigation system.
   灌溉油是灌溉系统的一个关键组成部分。
3. 3. The farmer had to replace the old irrigation grease with new ones.
   这位农民不得不用新的灌溉油替换旧的。