粗略的计算显示，任何有价值的地震预测手段，其观测的地震前兆的准确率必须达到98%以上。
Rough estimates suggest that any useful quake forecast method demands precursors that will prove correct 98 per cent of the time.
然而，被视作永久性雇佣前兆的临时性援助劳务，或在7月份下跌后出现去年9月以来的首次回升。
However, temporary help services, seen as a harbinger of permanent hiring, probably rebounded after falling in July for the first time since last September.
巴氏涂片可以检测异常细胞，这些细胞是癌症的前兆，可以使用激光等技术来摧毁它们。
Pap smears work by detecting abnormal cells that are cancer precursors and that can be destroyed using techniques like lasers.
巴氏涂片可以检测出那些异常细胞，它们是癌症的前兆，然后通过一些技术手段，如激光，冷冻疗法，或着难得也用外科手术来杀灭这些细胞。
Pap smears work by detecting abnormal cells that are cancer precursors and that can be destroyed using techniques like lasers and cryotherapy or, rarely, surgery.
研究结果表明，支持向量机方法在地震前兆数据处理中有着广泛的应用前景。
The results indicate that the support vector machine possesses extensive application prospects in processing earthquake precursory data.
这种飙升也许是通胀的前兆。
然后研究者检查了被测试着的动脉硬化情况。动脉硬化是高血压和心脏疾病的前兆。
They then examined their arteries for arterial stiffness, often a precursor to high blood pressure and heart disease.
这片位于米达尔斯冰盖北部的熔岩原是用来追踪地面形变的监测点之一，这里地面的形变可以被视为卡特拉火山喷发的前兆。
This lava field just north of the Mýrdalsjökull ice cap serves as one of many monitoring sites to track ground deformation that could serve as a signal of an impending eruption of Katla.
平衡失调还有可能是其它健康问题的前兆，因此检查清楚原因很重要。
Balance disorders can be signs of other health problems, so it's important to have them checked out.
儿童挑食是自闭症的前兆吗？
一些人将债券利差上升当做违约和欧盟解体的前兆。
Some people had taken rising bond spreads as an omen of default and euro break-up.
大多数人认为，这是公司将移动业务卖出的前兆——此举旨在减轻公司债务。
This was widely seen as a prelude to the sale of the mobile business to reduce the company's huge debts.
我个人并不希望否定混沌，即便是混沌本身暗含了一种毁灭的前兆。
Personally I do not wish to deny chaos, even if chaos itself, encompass a premonition of destruction.
中国地震地下水动态观测网是我国仅次于测震网的第二大地震前兆观测系统。
The groundwater observation well-network for earthquake prediction in China is the largest precursory observation system except the seismograph array.
地震前兆数据采集器是数字化地震前兆台站的关键性设备之一，其指标、性能对前兆观测数据质量有重要影响。
The acquisition system of earthquake precursor data is one of the key devices for digital earthquake precursor station, its technical target and property have important influence on data quality.
由专业地震台站和宏观观测网点组成的地震前兆监测台网对北京地区的地震预报发挥了很大的作用。
The professional monitoring stations and macro-observation networks have played important roles in predicting earthquakes in the Beijing area.
他常常说，蓝鸟是希望和胜利的前兆，以对家庭的忠诚而出名。
Bluebirds, he would say, are harbingers of hope and triumph, renowned for family loyalty.
这些症状可能是脑膜炎的前兆，有潜在的生命危险。
These could be signs of meningitis, a potentially life-threatening infection.
糖尿病的前兆在身体的各个部位都有可能出现，包括：牙龈出血、脚痛、颈部及腋下部分皮肤变黑。
Signs of diabetes show up all over the body, from bleeding gums to tingling feet to darkened skin patches on the neck and underarms.
更低的资本支出可能是更低的生产率增长的前兆，他们对此深表忧虑。
Lower capital spending, they fear, could be a harbinger of slower productivity growth.
到目前为止，任何所谓的地震前兆都远未达到这个准确率。
To date, no so-called quake precursor has achieved anything like that degree of reliability.
这么低的基础概率意味着，如果要让决策者下定决心，进行大规模人口疏散的话，任何地震前兆都必须极其可靠。
This very low base-rate means that any precursors of a quake would have to be incredibly reliable if decision-makers are to feel safe in using them to order mass evacuations.
气候预言家们开始不安起来，天气的不寻常可能是另外一个冰川时代到来的前兆。
Climatological Cassandras are becoming increasingly apprehensive, for the weather aberrations they are studying may be the harbinger of another ice age.
White说：“得知何时火山的不稳定成为喷发的前兆是一项挑战，而更大的挑战在于预测即将到来的喷发规模。”
“It will be a challenge to know when restlessness becomes a precursor to eruption, and a bigger challenge yet to predict the scale of a coming eruption, ” says White.
在人类身上出现裂谷热疾病的典型前兆是动物感染。
The appearance of RVF disease in humans is typically preceded by infection in animals.
印度不断增长的经常帐户赤字让人担心，原因不在于它是金融危机的前兆，而在于它表明了面对呈白热化增长的需求，供给已难以为继。
The reason for concern about India's widening current-account deficit is not that it heralds a financial crisis, but that it is a signal of how supply cannot keep pace with red-hot demand.
印度不断增长的经常帐户赤字让人担心，原因不在于它是金融危机的前兆，而在于它表明了面对呈白热化增长的需求，供给已难以为继。
The reason for concern about India's widening current-account deficit is not that it heralds a financial crisis, but that it is a signal of how supply cannot keep pace with red-hot demand.
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