Page Layout ⇒ Folding some pieces of text to odd numbered lines

[kornaros]

I face the following problem. I have some passages of English (or Latin)text. There are the corresponding translations in Spanish. For example
\newcommand{\pass1}{This is the first text in the original language}\newcommand{\pass2}{This is the next text}...etc and also
\newcommand{\trans1}{This is the translation of pass1 text}\newcommand{\trans2}{This is the translation of pass2text}. Is it possible to write down \pass1 and \pass2 and .... to odd numbered lines (1,3,5,...) and \trans1 , \trans2,... to even numbered lines in such way that \pass1 continues exactly from the point where the \pass1 finishes and similar \pass3 starts from the end of \pass2 ...and similar conditions for the translated texts \trans1, \trans2,...?

(In all cases LaTeX must respect the hyphenation of the original language of the pass texts and the hyphenation of Spanish language for the trans texts.)

Thanks

Charis