I saw ominous black clouds swirling overhead.我看到不祥的黑云在头顶上卷动翻滚。

They see this as an ominous development.他们将此视为不祥的事态发展。

There was an ominous silence at the other end of the phone.电话那头出现了不祥的沉默。

The rolls of distant thunder were growing more ominous.远处隆隆的雷声听着愈发惊心, 要变天了。

I watch dark, ominous crows gathering in the trees.我看见预示着不祥的黑乌鸦在树上聚集。