我相信你们都有自己关于过去三年幸福的回忆，以及你们想要感谢的人。

I'm sure that you all have your own memories about the happiness of the last three years, and the people whom you want to thank for it.

你是我最幸福的回忆！

You are my most joyful memory!

在校园里我们有很多幸福的回忆。

We have a lot of happy memories in schoolyard .

也许离去的人是幸福的。因为他会少些破碎的回忆。

Maybe people are happy to leave. Because he would be less broken memories.

那是些幸福的回忆，愉快的回忆，辛酸的回忆，也是痛苦的回忆。

Those is some recollections of happinesses , pleased recollection , sad recollection is also a painful recollection.

如今，过上好日子的人把过去当成幸福的回忆，并憧憬未来（对未来充满憧憬）。

Today well lived makes every yesterday a memory of happiness and every tomorrow a vision of hope.

后者还可以唤起我们对童年的回忆，触动一个人幸福的弦。

The fragrance of the latter may trigger feelings of happiness in an individual through its evocation of childhood.