oil mark

• 油渍

oil mark的用法和样例：

例句

1. His trousers were spotted with oil.
   他的裤子有油渍。
2. They slide over the bog like oil across glass.
   他们在腐沼中流窜，正如同油渍在玻璃上滑溜。
3. A big oil spot spread across the water.
   一块大油斑覆盖在水上。