adjective [原级]洁净的，干净的;讲卫生的，爱干净的；无污染的
- Cats are very clean animals.
noun [抽象名词]清洁，清扫，打扫
- The house needed a good clean.
verb [vt. 及物动词]使）清洁，清理；变干净；做清洁工；干洗；（烹饪前）清除（动物）内脏
- Who's going to clean up this mess?
adverb [程度副词]干净地，纯洁地；彻底地，完全地
- Are your hands clean?
