[Encaitare]

There are two lines given in Elvish when Treebeard speaks of Lothlórien:

The first word I can recognize, the longer name for Lothlórien, but perhaps someone has a translation of the whole text. I cannot tell if it is meant to be part of a poem or just prose.

I quote Ardalambion; some information here is taken from Appendix F under "Ents":

In a few cases, Treebeard also used Quenya elements and strung them together as he would do in his own language, like laurelindórenan lindelorendor malinornélion ornemalin. In Letters:308, Tolkien explains that "the elements are laure, gold, not the metal but the colour, what we should call golden light; ndor, nor, land, country; lin, lind-, a musical sound; malina, yellow; orne, tree; lor, dream; nan, nand-, valley. So that roughly he means: 'The valley where the trees in a golden light sing musically, a land of music and dreams; there are yellow trees there, it is a tree-yellow land.' " Another example of the same is Taurelilómëa-tumbalemorna Tumbaletaurëa Lómeanor, that Tolkien renders "Forestmanyshadowed-deepvalleyblack Deepvalleyforested Gloomyland". By this Treebeard meant, "more or less", there is a black shadow in the deep dales of the forest (Appendix F).

The first line is in the context that Treebeard is talking about Lothlorien, describing its beauty. Then he states that "Neither this country, nor anything else outside the Golden Wood, is what it was when Celeborn was young." He then recites the second line, which I suppose is in reference to his own land of Fangorn and how it has become dark and gloomy.