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.
하지만 거의 70권이나 되는 수학서적과 책을 쓸 때 그의 무릎위에서  놀았을 13명의 자녀들을 가진 오일러가 없었다면 아마도 이런 불변성을 없었을 겁니다.