然而，兰皮诺和其他人对传统主义者的一个基本假设提出了质疑：在整个地球历史中，冰川期是周期性发生的。
Yet Rampino and others question one of the traditionalists' basic assumption: the periodic occurrence of glaciation throughout Earth's history.
目的了解中国北方健康女性青少年青春期性发育过程。
Objective To investigate the process of puberty development of healthy adolescent girls in Northern China.
区元素同族内某些性质的起伏变化称之为第二周期性。
The second periodicity of element is rise and fall of some properties in elements of the same clan in Parea.
简言之，相对的和平稳定与战争动乱，呈周期性波动，是这个500年期间一个全球性的现象，这似乎与气温变动周期相关联。
In short, synchronous periods of relative peace and turbulence during those 500 years were a global phenomenon seemingly linked to temperature change.
这种震动以前被诟病为60年周期性日长变化的原因，但该研究发现的自转速度表明，它并不是罪魁祸首，英国利兹大学的乔恩芒德说。
The twisting had previously been blamed for a 60-year cycle in day length, but the rate of rotation found in this study suggests it is not the culprit, says Jon Mound at the University of Leeds, UK.
然而，研究这类材料的人所面临的复杂性，与英国刑法史学家最近在同一时期所克服的复杂性并没有完全不同。
Yet the complexities that confront those who would study such materials are not wholly different from those recently surmounted by historians of criminal law in England during the same period.
对农民来说，这一时期比以往更具有灾难性，因为农民不再能自给自足。
This period was more disastrous for farmers than earlier times had been, because farmers were no longer self-sufficient.
迪克领导了一个以尼德兰为基地的四年期项目，这个项目旨在产生一个科学的和商业性的计划，从而把昆虫带到西方人的餐桌上。
Dicke heads a Netherlands-based four-year programme aiming to produce a scientific and business plan to bring insects to western tables.
克隆与表达弓形虫缓殖子期特异性抗原1（BAG1）的基因，并分析重组抗原的免疫反应性。
Clone and express bradyzoite antigen 1(BAG1) gene of T. gondii, and analyze the immunoreactivity of the recombinant product.
该公司根据她的数据在结合其他上百名妇女上传的数据，使其算法能够认识和提高他们预测排卵期的精确性。
The company combines her data with those uploaded by hundreds of other women so that its algorithms can learn and improve their accuracy in predicting ovulation.
我认为我们重返繁荣期的可能性很大，要想还像那时那么稳定的可能性就很低。
I think the odds are very high we regain prosperity, but very low that we regain that combination.
虽然任何正值都是好的，但如果经营性现金流在同一时期超过净收入(在表的第一行)是最好的。
Though any positive number is OK, it's best if the operating cash flow exceeds the net income (top line) for the same period.
不过，最近的研究结果下调了太阳辐射因素对小冰河期的相对重要性。
However, recent studies have brought down the relative importance of this solar effect on the little ice age.
但是，在1960至1980年期间，源自阿富汗的输入性疟疾曾出现过上升趋势。
However in the 1960-1980 period, there was an increasing trend in imported malaria originating in Afghanistan.
也有人暗示，在气候变迁中，物种的消失应该是一个值得担忧的问题。但历史中在地球的升温期，生物的多样性在增加并未减少。
Loss of species from climate change has certainly been suggested as a possible concern as well, but biodiversity in the Earth's warming periods has increased, not decreased historically.
如果你的业务有空窗期可以做etl，那是最好的；如果没有，管理可伸缩性就是很大的挑战。
If your business has nice offline Windows for the ETL, that's great, but if not, managing the scale becomes a challenge.
它掩盖了其它方面的致命性儿童期疾病，浪费宝贵的药物，加快不可避免的耐药寄生虫的出现，并使人无法了解疟疾的真实负担。
It masks other deadly childhood illnesses, wastes precious medicines, hastens the inevitable emergence of drug-resistant parasites, and makes it impossible to know the true burden of malaria.
在北半球，我们现正进入季节性流感的高峰期。
In the northern hemisphere we are now entering the peak period for seasonal flu.
为了弥补这个差额，出生的男孩数会多于女孩数，所以到了青春期，男女两性数量会基本持平。
To compensate, more boys are born than girls so there will be equal Numbers of young men and women at puberty.
但是结构性开支仍然疲弱，2011年期望的增长只有1.4%。
But spending on structures remains weak, expected to grow just 1.4 percent in 2011.
随着病程进展，患者的传染性愈加强烈，在疾病的严重期传染性最大。
Patients become increasingly infectious as their illness progresses, and are most infectious during the phase of severe illness.
公司最欣赏的职员都是那些愿意多做事，经常帮助同事赶交期，并且自愿接受有挑战性的任务的职员。
Employees who are willing to take on additional assignments, help coworkers meet their deadlines, and volunteer for increasingly challenging assignments, are appreciated.
这一最初感染期感染性最强，但在各感染期都可能会传播艾滋病毒。
This early period of infection represents the time of greatest infectivity but transmission can occur during all stages of the infection.
在患者首次接受安定药处方及做了药物持有率(MPR)测试之后，研究人员分析12个月跟踪期的药物依从性。
Adherence was analyzed over a 12-month follow-up period after the patients received a first prescription of an antipsychotic medication and was measured by the medication possession ratio (MPR).
几乎所有肺结核病菌感染都有潜伏期，携带者没有症状，而且没有传染性。
Nearly all TB infections are latent, with carriers showing no symptoms and they are not infectious.
NIA认为在未来的几个月债券的收益率可能继续戏剧性的升高，10年期的债券收益率在2011年的上半年有可能提高到4%。
NIA believes it is likely that bond yields will continue to rise dramatically in the months ahead, with 10-year bond yields likely to rise above 4% in the first half of 2011.
七月的欧洲工业生产活动显著减少，为欧元区跌入衰退期增加了可能性。
Industrial activity in Europe suffered a steep decline in July, increasing the likelihood that the euro-zone will slip (or has already slipped) into recession.
七月的欧洲工业生产活动显著减少，为欧元区跌入衰退期增加了可能性。
Industrial activity in Europe suffered a steep decline in July, increasing the likelihood that the euro-zone will slip (or has already slipped) into recession.
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