Перевод - Датский-Английский - øjne kan smile munde kan le men smerten i...

"Eyes can smile" otherwise it should have been "øjnene".
"Mouthes can smile" otherwise "mund".
I'd say "the "the pain"
instead of "sadness" which , in Danish is "tristheden'.
But perhaps it's only a
synonyme.

I'm happy with all these suggestions.
Thanks Lene

The addition of a definite article is acceptable in this case, even if absent in the original. But "munde" is plural. Furthermore, sometimes the order of the words is crucial, not for the meaning, buit for the emphasis. A better translation would be: "but the pain in/of the heart, nobody notices" or something like that.

"pain" instead of "sadness".

Others, fine in my opinion.

Lilian, please edit or reject as you see fit - off on holidays now

"øjne" is plural too - singulat is "øje" so I don't think we should use the definite article.

CC: jairhaas pias

But in English, Lene, the article is correct

I know, dear Lilian. Anyway, I know you'll
always be the best. It was a reply to Jair.

CC: jairhaas pias lilian canale

Lene, you "called" me, I'm not an English expert ... but I AGREE with you, it's not definite in the original!

I think this must be one of the trickiest things to learn about English grammar!! There are 'rules' for articles, right... but it seems there are also many exceptions, d'oh!

Hehe, Yes I know that you're not an English expert, dear Pia. But as you had given your opinion I wanted you to be informed. Oh², English, it's seems so easy but it's quite hard, but luckywise we have our dear expert to correct us.