I congratulate you very heartily .

我衷心的祝贺你。

I heartily wish you joy .

我衷心祝你快乐。

I heartily wish you success .

我衷心祝您成功。

Laugh , and the world will laugh heartily with you .

你如果乐观，世界也会陪你欢笑。

We approve , therefore , of the laughter of the company , and feel that it is natural and suitable to its object ; because , though in our present mood we cannot easily enter into it , we are sensible that upon most occasions we should very heartily join in it .

因此，我们赞成同伴的笑声，认为这样做是自然适合的；因为，尽管以我们目前的心情来看我们不能够很容易地进入这种状态，但是我们意识到大多数情况下我们应该尽情享受这种快乐。