柯林斯詞典sunflower /?s?n?fla??/ (sunflowers) 1. N-COUNT A sunflower is a very tall plant with large yellow flowers. Oil from sunflower seeds is used in cooking and to make margarine. 曏日葵 返回 sunflower劍橋詞典a plant , usually having a very tall stem and a single large , round, flat , yellow flower , with many long , thin , narrow petals close together 曏日葵 返回 sunflower