domestic duck

常见例句

A wild duck(Anas platyrhynchos)of which the male has a green head and neck. Most domestic ducks descend from the mallard.
绿头鸭一种野鸭（绿头鸭），其雄鸟具有绿色的头和颈。大部分驯化了的家鸭都是绿头鸭的后裔。
The mallards were once kept to hybrid many forms of domestic ducks, such as Peking duck in China, duck head duck in Italy, and green head duck in Japan.
绿头鸭曾被人利用饲育驯养而改良成各种的家鸭品种如中国的北京鸭、意大利的黑头鸭及日本的青头鸭等。
Liang Tan River pollution is mainly farming wastewater, domestic sewage and so on, 40% of them is duck droppings pollution, the integrated control of beach River focused on duck pollution .
梁滩河污染主要为养殖污水、生活污水等，而其中鸭粪随意排放引起的污染占40%。