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1·Her appearance at this moment is an omen of disaster.

她此时的出现是灾难的预兆。《柯林斯英汉双解大词典》

2·The people observe thy downcast head, thy clouded mien, and they take it for an omen.

人们看到你低垂的头，你闷闷不乐的样子，就以为是不好的预兆。

3·In a 1-out-of-365 chance, or less considering leap year, Palmisano and Rometty share the same birthday, July 29th; is that an omen of some kind?

帕米萨诺和罗梅蒂在7月29日同一天生日，这可是365分之1的小概率，考虑到闰年，可能更小；这是某种预兆吗？

4·The ill-omen linked to the lighting of three things from one match or candle goes back to at least the 17th century and probably earlier.

一根火柴或蜡烛点燃三样东西的不祥征兆至少可以追溯到17世纪，或者可能更早。

5·It is said to be an omen of misfortune.

那被认为是一种不幸的先兆。《新英汉大辞典》

6·Or is it an ominous omen?

又或者说是一种不祥的预兆？

7·Everything in life is an omen.

生活中的一切都是预兆。

8·That is an anxious omen.

那是个令人担忧的预兆。

9·But at least one omen is encouraging.

但至少有一个兆头鼓舞人心。

10·He's a bird of bad omen: no mate for you.

他是一只不祥的鸟，不是你的配偶。

预兆

1·Or is it an ominous omen?

又或者说是一种不祥的预兆？

2·Gold's fall could be an omen in another way, too.

金价的下降也可能是另外一种方式的预兆。

3·The rising possibility that Mr Sarkozy will lose the presidential election in France in 2012 is also a good omen for Turkey.

而萨科奇将在2012年法国大选中败北的可能性正逐步增大，这对土耳其来说也是好的预兆。

4·But the episode served as an omen of things to come.

但是这段运气不好的情节只是将来发生的事件的一个预兆。

5·It appears a short moment after he overtakes the Volvo: the omen.

佛教徒超车过了沃尔沃没多久，预兆出现了。

征兆

1·In Han esoteric texts, the nine-tailed fox is not a man-eating beast, but rather an auspicious omen.

汉代的神秘文献中，九尾狐不是吃人的野兽，而是吉祥的征兆。

2·When I landed in Port Angeles, it was raining. I didn't see it for omen — just unaudio-videooidable. I'd then said my goodbyes to the sun.

飞机在天使港着陆时，天空正在下着雨。我没有把它看作是某种征兆——下雨在福克斯是不可制止的。我已经跟太阳说过再见了。

3·For the complicated relation between the malfunction omen and the malfunction reason, the traditional classical mathematics cannot exactly diagnose the airplane malfunctions.

对于故障征兆与故障原因间的复杂隶属关系，如果使用传统的经典数学模型来处理往往不能准确的解决问题。

4·What is the omen of leukaemia?

白血病的征兆是什么？

5·Often flow nosebleed and is cold sweat all over leukaemia omen?

经常流鼻血和浑身出冷汗是白血病征兆吗？

先兆

1·It is said to be an omen of misfortune.

那被认为是一种不幸的先兆。《新英汉大辞典》

2·This is an omen of good luck for many, as it is a statement that you are making good.

这是一个先兆好运，对许多人来说，因为它是一份声明中说，你正取得良好的。

3·The newborn becomes little cries, not to cry instead is the omen which illness gets sick.

新生儿变得少哭、不哭反而是疾病的先兆。

4·Before being in labor, will present the childbirth omen.

临产前就会出现分娩先兆。

5·The case of cracking in silos is very common. Cracks may affect the normal USES of silos and even be the omen of collapse.

筒仓发生裂缝，轻者影响筒仓的正常使用，重者是筒仓倒塌事故的先兆。

前兆

1·Some people had taken rising bond spreads as an omen of default and euro break-up.

一些人将债券利差上升当做违约和欧盟解体的前兆。

2·Earthquake macroscopic omen anomaly has particular reflecting earthquake traits, which plays an important role in earthquake forecast.

地震宏观前兆异常具有独特的映震特征，在地震预报过程中起到重要作用。

3·The people observe - to occur with the earthquake have the close contacting abnormal phenomenon to be called the earthquake omen.

人们把观察到的—些与地震发生有密切联系的异常现象称为地震前兆。

4·It's an omen.

这是一种前兆。

兆

1·Gorgeous fireworks bloomed flaring, bright red spring couplets written good omen, strong festival atmosphere to disperse cold, purse full pressure, a red envelope.

绚丽的烟花绽放云宵，大红的春联书写喜兆，浓浓的年味驱散寒潮，满满的钱袋压岁红包。

2·The omen originates from the divination.

“兆”起源于占卜。

3·The third one is dream omen, which is coincidental with the earlier dream world.

三是梦兆，即与事实巧合的早期梦境。

预告

1·In ancient Rome, this frightful event was believed to be an omen that bad things were on the horizon.

古罗马时期，这种可怕的事据信是一种预告，代表坏事即将发生。

(1)auspicious omen吉祥；好兆头