paraffins

例句：

1. 1. The paraffins in the oil are used to lubricate machinery.
   油中的石蜡用于润滑机械。
2. 2.Paraffins are a type of waxy substance that can be used as an insulator.
   石蜡是一种蜡状物质，可以用作绝缘材料。
3. 3. The paraffins in the oil are extracted from petroleum.
   油中的石蜡是从石油中提取出来的。