portent

天空中聚集的乌云预示着暴风雨即将来临。

The gathering dark clouds are a ___portent of an approaching storm.

这只罕见的白孔雀的出现被村民视为一个奇异的征兆。

The appearance of this rare white peacock was seen as a ___portent by the villagers.

地震前的动物异常行为被视为灾难即将来临的征兆。

The unusual behavior of animals before the earthquake was considered a ___portent of the coming disaster.