I fail to see the logic behind his argument.

我不明白支持他论据的是什么逻辑。

《牛津词典》

I fail to follow the logic.

我不理解这种逻辑。

youdao

Fight, fail, fight again, fail again, fight again... till their victory; that is the logic of the people, and they too will never go against this logic.

斗争，失败，再斗争，再失败，再斗争，直至胜利——这就是人民的逻辑，他们也是决不会违背这个逻辑的。

youdao

I fail to see the logic of this comment.

我完全看不出这两件事的逻辑联系。

youdao

I fail to see the logic of this comment.

我完全看不出这两件事的逻辑联系。

youdao