这个可怕的巧合仅仅是巧合而已。

But the terrible coincidence is just that: a coincidence.

youdao

这不是什么征兆，只是巧合而已。

Well, it wasn't a sign. It was a coincidence.

youdao

怀疑论者同时也举出了压倒性的证据，所有所谓的显灵效果都是巧合而已。

Skeptics will also point to the overwhelming evidence that all so-called effects of prayer can be explained through mere coincidence.

youdao