Billy: "Mother, Bobby broke a window."

　　Mother: "How did he do it?"

　　Billy: "I threw a rock at him and he ducked."

　　比利：“妈妈，波比打坏了窗玻璃。”

　　妈妈：“他怎么打的？”

　　比利：“我向他扔石头，他躲开了。”