n.前兆,征兆,预兆,兆头
vt.预示,预告,有…的前兆
It is said to be an omen of misfortune.
那被认为是一种不幸的先兆.
The unusually heavy rainfall was an ill omen for the travellers.
异乎寻常的大雨是旅行者的不祥之兆.
Her appearance at this moment is an omen of disaster.
她在此刻出现预示着一场灾难。