Rob:Hello!I'mRob.Andit'sChristmas!羅布:大家好!今天是聖誕節!Helen:HelloRob!海倫:你好,羅布!Rob:HelloHelen!HappyChristmas!羅布:你好,海倫!聖誕快樂!Helen:HappyChristmas!海倫:聖誕快樂!Rob:Comein,comein!羅布:請進......