Complex sentence: Laud records it as "De causis torche n'Déssi"/ "acuis toirge na n'Déssi"; the word "torche/toirge" is obscure, but Meyer associates it with "expedition".
Split into simpler sentences: Laud records it as "De causis torche n'Déssi"/ "acuis toirge na n'Déssi". The word "torche/toirge" is obscure, but Meyer associates it with "expedition".