2.No formula can be used to calculate your devotion；no poems and songs to express our heartfelt gratitude to you.It is you that cultivate our minds with your extensive knowledge and your noble spirits.On this special occasion，please accept our best wishes！
加减乘除，算不出您作出的奉献！诗词歌赋颂不完对您的崇敬！您用知识的甘露，浇开我们理想的花朵，在这不寻常的时刻，请接受我深深的祝福！