基本解释n.屁股n.小圆面包；圆髻名词bun的复数形式同根派生 英汉例句用作名词 (n.)Hey! What are you doing staring at that girl's buns?你眼睛瞪著那个女孩子的屁股看干什么?用作名词 (n.)He swilled three buns in a short time.不一会儿他就吞下了三个圆面包。I bought some buns for tomorrow's breakfast.我买了几个圆面包当明天的早餐。