ooid

例句：

1. 1. 油
   oil
2. 2. 油印
   oil print
3. 3. 油井
   oil well
4. 1. The car engine is producing a lot of oil.
   汽车发动机正在产生很多油。
5. 2. Oil is a good lubricant for machinery.
   油是机械的良好润滑剂。
6. 3. The oil spill has caused environmental concerns.
   油泄漏引起了环境担忧。