" It is beyond any doubt that human activity is to blame."

“毫无疑问，这应该归咎于人类活动。”

The swans now realized, beyond any doubt, that the boy was their friend.

天鹅们现在明白了，毫无疑问，这个男孩是他们的朋友。

Certainly, and beyond any doubt, Marta wanted professional success.

当然，毫无疑问，玛尔塔想要事业上的成功。

I have found out, beyond any doubt whatever, that disobedient boys are certainly far from happy, and that, in the long run, they always lose out.

如今我知道了，毫无疑问的，不听话的孩子不可能会快乐，长久来看，他们总是一事无成。