柯林斯词典mallard /ˈmælɑːd/ (mallards) 1. N-COUNT A mallard is a kind of wild duck that is very common. 野鸭 返回 mallard剑桥词典a wild duck that is common in Europe and North America 绿头鸭（常见于欧洲和北美的一种野鸭） The male mallard has a green head and reddish-brown chest . 雄性绿头鸭的头部呈绿色，胸部呈棕红色。 返回 mallard