soft paraffin

例句：

1. 1.The soft paraffin was used to lubricate the machine.
   软石蜡被用来润滑机器。
2. 2. The paraffin was extracted from petroleum.
   石蜡是从石油中提取的。
3. 3. The wax was used as a protective coating on the wooden furniture.
   蜡被用作木家具的保护涂层。