1、
As for her engagement with Adam, I would say the portents are gloomy.
至于她和亚当的婚约，我看兆头不妙。
《柯林斯高阶英汉双解学习词典》
2、
3、
Comets have long been regarded by the superstitious as portents of calamity or important events.
彗星长期以来都被迷信地认为是灾难和重要事件将发生前的预兆.
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