This is a line from John Milton's L'Allegro.

But it's not a grammatical sentence. I orphaned my Esperanto translation and suggested that it be deleted.

Dejo, the sentence is certainly mediæval English, but can be taken as grammatical if you permit the concept of so-called understood words. Milton is personifying melancholy or depression, and telling it: "Begone!"

[Get thee] hence, [you] loathéd melancholy.

In other words,

[Go] away [from me], [you] sadness hated [by me].

The sentences makes perfectly sense for me now. I like it. ☺

It's not likely a useful example sentence for someone who is learning English.

One could easily argue that Milton didn't intend this as a complete sentence either, since it's only the first line of a long poem that doesn't end with any punctuation.

http://www.englishverse.com/poems/l_allegro

Even single lines from modern poetry are often not good examples of normal language usage.

Why has my translation been unlinked?

I'm sorry, Pfirsichbaeumchen. I must have done so accidentally. It was certainly not intended. I've been trying to learn how to link sentences, and have so far been entirely unsuccessful at doing so. I do, however, appear to be able to unlink them, but without having any idea of how it happened. I'm going to stop trying to link sentences altogether until I see a clear explanation of how it can be done effectively without simply creating more trouble for other editors. Again, I'm sorry.

-- Erik (Objectivesea)

Thanks to CK for sending a clear graphic that made linking understandable even to my thick old head. I was able to relink Pfirsichbaeumchen's sentence with no trouble.