其实一般外国人送的礼物都不值钱，有时候甚至是贺卡，也只是为了表达友善，你不一定要拒绝。不是贵重物品拒绝也不是显得很友善。国际快递费对他们来说最多也就是十几二十，信件也就几块。他们赚的不是人民币，呵呵，你不用算汇率。
如果你一定要拒绝，你可以这么说。I really appreciate your kindness. I don't want to bother you in buying something for me. As long as we can keep in touch, I will be happy enough. Best wishes, 某某.
