But if it wasn't for Mr. Euler -- who wrote almost 70 volumes of mathematics and had 13 children, who he apparently would dandle on his knee while he was writing -- if it wasn't for Mr. Euler, there wouldn't perhaps be these invariants.
Tačiau jei ne ponas Euleris, kuris parašė apie 70 matematikos knygų ir turėjo trylika vaikų, – jis supdavo juos ant kelių rašydamas, – jei ne ponas Euleris, nežinia, ar turėtume šiuos invariantus.