出车祸的那天早晨，他就有一种不祥的预兆。
The morning before the car accident, he had a premonition of disaster.
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乌鸦是不祥的预兆。
The crow is a bird of ill omen.
她觉出有变化的迹象，她可以看出这不祥的预兆了。
But she knew the signs of change, she could read the writing on the wall.
他们未来成功的预兆不祥。
The omens for their future success are not good.
《牛津词典》
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