原级：omen
1. Its large, cruciform steel frames were regarded as bad omens because the cross symbolizes wrongdoing or denial.
2. I do not want to sound alarmist, but I see very bad omens.
3. The Romans saw owls as omens of impending disaster and many ancient cultures viewed elephants as sacred animals endowed with special powers or attributes.
4. Omens are already there, and public confrontations are getting more violent.
5. omens的解释
5. She adds that she normally doesn't share bad omens with visitors, because bad luck can be usurped by positive thinking.