如果有人让你失望了，但是总的来说他一直是一个很好的朋友，这个时候我们要原谅他，忘记这件事。

So if someone has disappointed you, but overall has been a great friend, then this is the time you forgive and forget.

youdao

许多人都忘记了我们曾经享受过的年轻活力是什么样子的了，仍记得你是孩儿时候的样子吗？

Many of us have forgotten what it's like to have the youthful energy we once enjoyed. Remember what it felt like as a kid?

youdao

当你一个朋友为某个她犯下的错误而困扰的时候，你可以劝她忘记这些，你就可以说，“水已经漫过堤坝了(木已成舟，懊恼是没有用的)”。

When a friend is troubled by a mistake she has made, you might tell her to forget about it. You say it is water over the dam.

youdao