His face had a frightening aspect.

他的脸色很吓人。

I know that the witch of the most frightening aspect is lonely.

我知道，魔女最可怕的一面，便是寂寞。

The frightening aspect of all this is that cutting costs, which they will inevitably do, could very well mean denying vital services.

而最终他们将不得不做一件事情，那就是另所有人都惊恐的削减开支，这其实意味着拒绝提供必要的服务。