n.

1. 責任；義務；本分[C][U]
   It is our duty to defend our country.

   保衛國家是我們的義務。

2. 稅[C][U]
   Customs duties are paid on imported goods.

   進口貨物要付關稅。

3. 職責；職務[P1]
   One of my duties is to file the letters.

   我的職責之一是將信件歸檔。

4. 敬意；恭順
5. （機器的）功率；能率；負荷
6. （作物所需的）灌溉量

n.

1. a moral or legal obligation.
2. a task required as part of one's job.
   ▸ (duties) performance of prescribed church services by a priest or minister.
3. a payment levied on the import, export, manufacture, or sale of goods.
   ▸Brit. a payment levied on the transfer of property, for licences, and for the legal recognition of documents.
4. technical the measure of an engine's effectiveness in units of work done per unit of fuel.