英语礼仪用语5范文 工作午餐workingluncheon 自助餐buffetdinner/luncheon 答谢宴会returndinner 告别宴会farewelldinner 庆功宴gleefeast 招待会reception 庆祝中华人民共和国成立四十五周年招待会receptioncelebratingthe45thanniversaryofthefoundingofthepeoplesrepublicofchina