basigamous

例句：

1. 1. The old house was said to be a portent of bad luck.
   据说这所老房子预示着厄运。
2. 2. The storm portended a long and difficult journey ahead.
   暴风雨预示着前方将是一场漫长而艰难的旅程。
3. 3. His sudden departure portended trouble for the team.
   他突然离开预示着对球队不利。