N-COUNT 征兆;预兆;兆头 If you say that something is an omen, you think it indicates what is likely to happen in the future and whether it will be good or bad. 征兆;预兆;兆头
Her appearance at this moment is an omen of disaster.
她在此刻出现预示着一场灾难。
Could this at last be a good omen for peace? [+ for]