那被认为是一种不幸的先兆。
那座桥在没有任何先兆的情况下坍塌了。
11月的空气刺痛了我的脸颊，这是冬天要来的先兆。
乌云是下雨的明显先兆。
洛杉矶就是这一新兴文化的先兆。
这一脑部活动被认为是先兆偏头痛的成因。
This brain event is considered to be the cause of migraine aura.
越南的困难是亚洲其它地区危机的先兆吗？
Could Vietnam's difficulties be a harbinger of trouble elsewhere in Asia?
我认为这就是短期影响和长期影响共同的先兆。
I see that as a predictor of both short-term and long-term effects.
确实，我们已经可以看到现在这场动荡的先兆了。
Indeed, we can already see the first symptoms of the coming upheaval.
首先出现水位的逐渐变化，这是风暴到达前几小时的先兆。
Firstly comes a gradual change in water level, the forerunner, a few hours ahead of the storm's arrival.
自然灾害或事故往往在毫无先兆或很少预兆情况下发生。
Natural disasters and accidents happen with little or NO warnings.
施用硫酸镁等药物治疗子痫先兆可降低妇女罹患子痫的危险。
Administering drugs such as magnesium sulfate for pre-eclampsia can lower a woman's risk of developing eclampsia.
到达戈壁滩的先兆是车厢里的尘土越来越大，“戈壁，戈壁！”
It was the increasing levels of dust in the carriage that first signalled the Gobi was upon us. 'Gobi!
加州所发生的这一切只是其他各州的一个先兆，也只是全国趋势的一个集中体现。
What's happening in California is both a harbinger of things to come in other states and an amplification of a national trend.
上面以南极为中心的地图是根据“先兆”人造卫星上的臭氧监测仪的数据绘制的。
The south pole-centered map above is based on data from the Ozone Monitoring Instrument (OMI) on the Aura satellite.
虽然距离下一年选举开始还有好一阵子，但目前的先兆预示着民众对此的期盼可能要落空了。
Plenty of time still remains before the start of next year's campaign. But the early signs suggest such hopes are likely to be disappointed.
但有一点是清楚的，那就是对于一小部分人来说，过度上网可能是抑郁倾向的先兆。
What is clear is that for a small subset of people, excessive use of the internet could be a warning signal for depressive tendencies.
但其实，很多疾病在突发前都有一些身体上的先兆，只不过没有引起足够重视罢了。
But in fact, many diseases in emergencies before have some indication on the body, but did not draw enough attention.
是投机行为盛行？是因为货币发行过量？还是全球范围通货膨胀失控的先兆？不是，都不是。
Is it speculation run amok? Is it the result of excessive money creation, a harbinger of runaway inflation just around the corner? No and no.
但是Nield博士最令人惊奇之处在于，他揭示出陨星并非死神之降临，而是生命之先兆。
But Dr Nield's most surprising revelation of all is that, far from being agents of death, meteorites might, in fact, be harbingers of life.
传感器和“主动控制”被用于侦测危险震颤的先兆迹象，而这种危险震颤也会限制直升机的前飞速度。
Sensors and active controls are used to detect the onset of dangerous vibrations, which also limit the forward speed of a helicopter.
Discovery或许将成为另一波冲击西方医疗保健行业(及其他高级服务业)领导地位的先兆。
Discovery may be a harbinger of another wave which challenges the West's lead in health care and other sophisticated services.
世界银行声称上涨的粮食价格已经使得世界的贫困人口又增加了4.4千万，而贫困则是营养不良的先兆。
The World Bank said that surging food prices have pushed an extra 44m people worldwide into extreme poverty, which can often be a precursor to malnutrition.
“过多呵欠的症状经常是癫痫病人病情发作的先兆，而且可以预测头痛病人偏头痛的发作，”他补充道。
"Bouts of excessive yawning often precede the onset of seizures in epileptic patients, and predict the onset of headaches in people who suffer from migraines," he added.
科学家认为北极地区对全球气候变暖非常敏感，同时他们对密切监测可能出现的气候变化先兆特别感兴趣。
Scientists consider the Arctic highly sensitive to global warming and are particularly interested in closely monitoring its changes as possible harbingers.
主导此次试验的罗伯特·威尔逊博士在先前的论文中称，嗅觉下降可能是老年痴呆等常见神经组织退化病症的先兆。
Study leader Dr Robert Wilson said his previous research had found that an impaired sense of smell could be an early sign of some common neurodegenerative conditions such as dementia.
兹有事例可以证明：近期小麦价格的高涨(由澳大利亚的干旱所引发)正是对气候改变影响食物产出这种潜在可能的先兆。
Arguably, the recent surge in wheat prices (prompted by an Australian drought) is an early indicator of the potential for climate change to disrupt food output.
兹有事例可以证明：近期小麦价格的高涨(由澳大利亚的干旱所引发)正是对气候改变影响食物产出这种潜在可能的先兆。
Arguably, the recent surge in wheat prices (prompted by an Australian drought) is an early indicator of the potential for climate change to disrupt food output.
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