Now that schools have opened, some children are finding it difficult to focus on their studies, but many are glad to be back to the comfort of routines.
现在学校已经复课，一些孩子感到自己难以集中精神学习，但是许多儿童还是很高兴回到日常的快乐生活。
But many studies have already linked estrogen therapy with increased risk of breast cancer and death from the disease.
但是许多研究已经证明雌激素治疗与乳腺癌的罹患和致死是有关联的。
But there is little to suggest that he bought many books, or that he did much else to further his studies.
但是，从这些账单中，几乎没有迹象表明他买了很多书或者说他为了深入学习而有所付出。
But among the many studies that evaluated death from heart problems, some did not separate stress and noise from air pollution as a cause, it said.
不过，该报告说，在众多因心脏问题导致死亡的病例中，研究人员并没有把精神压力、噪声与空气污染的原因分离出来。
Recent international studies indicate that British social strata are a bit more flexible than America's but more rigid than in many European countries.
最近的国际性研究表明，英国的社会分层比美国的要稍微灵活一些，但比欧洲的许多国家要刻板。
Studies have produced varying recommendations over the years but in truth your water needs depend on many factors including your health how active you are and where you live.
在过去的很多年有很多研究给出了很多的建议，但事实上，每人每天对水的需求量取决于很多因素，包括您的健康状态、活动量以及生活环境。
Studies have produced varying recommendations over the years, but in truth, your water needs depend on many factors, including your health, how active you are and where you live.
在过去的很多年有很多研究给出了很多的建议，但事实上，每人每天对水的需求量取决于很多因素，包括您的健康状态、活动量以及生活环境。
Of course, psychiatric drugs also change brain activity, but many studies have found that such drugs are no more effective than evidence-based psychotherapies like CBT.
当然，精神类药物也可以改变大脑活动，但是许多研究都证明，这些药物都不比经过实证的包括CBT在内的精神疗法有效。
"I've received hate mail in the past from some parents after they've read about the studies, but often find that many parents feel liberated by the research," she said.
“我过去曾收到一些父母在阅读研究报告后发来的恐吓信件，但常常发现，也有很多父母觉得研究让他们恍然大悟，”她说。
The link between smoking and cancer, for example, was seen in many observational studies, but forcing subjects to smoke for years to prove it would be untenable.
拿吸烟和肺癌之间关系的研究来说，许多观察性研究都发现了这一点，但要迫使研究对象吸烟多年来证明这一点恐怕是不可能的。
But there are quite a lot of studies showing that many countries now are investing in the right activity-for example, protecting the social safety net.
但是，也有许多研究显示，许多城市目前正在致力于正义的活动中——比如，保护社会安全网。
Many of the drinks contain herbal, plant or hormonal therapies which have been shown in at least some studies to be effective — but also may have side effects, scientists say.
科学家们说，其中很多饮料含有草药、植物或激素成分，这些成分至少在一些研究中显示出了有效性，不过也可能有副作用。
But many studies of both men and women now suggest that it is not how much you weigh but where you carry your weight that matters most to your health.
然而，很多男女共同参加的研究指出，是身体重量的分布方式，而非体重的数值，对健康更为重要。
Data from several prospective studies have supported an association, but many other studies have failed to establish a link.
有几项前瞻性研究数据支持此观点，但多数其他研究认为，两者没有联系。
Many studies and reports have been seen and heard, but there is no definitive answer as to what holds the title of the dirtiest spot in the restroom.
许多被看到和听到的研究报告，在用什么作为肮脏的洗手间的标题上，却并没有确定的答案。
Many studies have linked drinking extra water with health benefits, but critics generally dismiss them as statistically insignificant, inconclusive or not widely applicable.
许多研究将多饮水与有益健康联系在一起，但是批评人士通常认为此类研究数据不充分，结论不确定，或者并非广泛适用。
The ones that some studies have linked to heart benefits are derived from Marine sources, such as fish oil, but many foods touting omega-3 use plant sources, Lichtenstein said.
一些研究中谈及使心脏受益的omega - 3脂肪酸来自海洋资源，比如鱼油，但是许多食品采用的omega - 3提取自植物资源，Lichtenstein说。
Lauderdale said her findings should be confirmed by others, but said many studies point to the need for at least six hours of sleep a night.
劳德黛尔说，她的发现将通过其他科学家的研究得到证实，不过，许多研究已经指出，人们每晚至少应当睡6小时。
To many, his results were surprising, but they've since been corroborated by similar studies in Europe and East Asia. Kripke explains.
对比的结果令人吃惊，但之后欧洲和东亚的相似的这方面的研究证实了他的结果，Kripke说。
That might not sound much, but it is an average over many studies and often for things that are hard to remember.
这点记忆提高程度，看起来也许并不算很多，但是这是多年以来大量研究数据而得到的平均值，而且记忆测试时候采用的大多是一些生僻难记的词汇，所以这些已经算是已知的可以大幅提高记忆的良方了。
It was not clear from the study how many of the infections proved fatal, but other studies in the U.S. and Israel have shown that about 40% of patients with the infection die.
目前还不清楚受到感染的患者中有多少人会有生命危险，但美国和以色列的其他研究表明，有大约40%的人感染后会死去。
It was not clear from the study how many of the infections proved fatal, but other studies in the U. S. and Israel have shown that about 40% of patients with the infection die.
目前还不清楚受到感染的患者中有多少人会有生命危险，但美国和以色列的其他研究表明，有大约40%的人感染后会死去。
But many of those studies were small or observed women already taking fish oil, who might be more health-conscious.
但多数有关研究规模小，而且被观察的妇女已经服用了鱼油，她们有更强的健康意识。
Many studies have found that challenging mental activities such as puzzles can help preserve brain function, but few have looked at what role the Internet might play.
此前有很多研究表明，一些智力挑战游戏如猜谜等可以保持大脑的活力，但很少有人注意到网络发挥的作用。
Many people consider chocolate a mood-booster but few studies have actually confirmed the connection between the confection and mood.
很多人认为巧克力有助于促进心情的改善，而很少有研究能确切证实甜点与心境之间的关系。
Many people consider chocolate a mood-booster but few studies have actually confirmed the connection between the confection and mood. And most studies have looked only at women.
很多人认为巧克力有助于促进心情的改善，而很少有研究能确切证实甜点与心境之间的关系。同时大多数的研究只在女性团体里展开调查。
Medical science is not foundedon "common sense, " but on uncommon investigation: on randomized, controlled studies that try to rule out as many confoundingvariables as possible.
医学科学并不是建立在“常识”基础之上的，而是建立在特殊的科学研究之上：为尽可能排除一切混杂变量而在控制范围内随意抽样化验。
But retrospective studies have shown that many of those children did not, in fact, have the disease.
但回顾性分析表明这些儿童事实上并没有患病。
Previous studies have looked at lifestyle habits as a possible cause, but many have been unable to reach firm conclusions due to insufficient Numbers of patients.
过去医学界认为，不良的生活方式可能是这种胃肠疾病的主要原因，但由于作为研究对象的该病患者不足，对于引发这种疾病的确切原因一直都没有得出一个可靠的结论。
Previous studies have looked at lifestyle habits as a possible cause, but many have been unable to reach firm conclusions due to insufficient Numbers of patients.
过去医学界认为，不良的生活方式可能是这种胃肠疾病的主要原因，但由于作为研究对象的该病患者不足，对于引发这种疾病的确切原因一直都没有得出一个可靠的结论。
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