any of various trailing or twining,often weedy plants of the genera Calystegia and Convolvulus,having white,pink,or purple bell-shaped or funnel-shaped flowers是什么意思_any of various trailing or twining,often weedy plants of the genera Calystegia and Convolvulus,having white,pink,or purple bell-shaped or funnel-shaped flowers在线翻译_英语_读音_用法_例句