以杂交鹅掌楸幼胚为外植体，进行体细胞胚胎发生研究。
Somatic embryogenesis was successfully done in Liriodendron hybrids with the immature zygotic embryos as explants.
心脏的原基分布图和心脏细胞谱系是心脏起源和形态发生研究的主要方面。
The cardiac fate maps and cell lineages are the main aspects in the research on the cardiac origin and morphogenesis.
尽管总是有发生大的冲击的风险，但谨慎的研究表明这种风险是相当小的。
Although there is always some risk that a large impact could occur, careful study shows that this risk is quite small.
我的研究重点是随着年龄的增长，我们的免疫系统会发生什么变化。
My research focus is on what happens to our immune system as we age.
这些研究表明，“选择盲”这一病症可以发生在各种各样的情形下，并可能对医疗和司法结果产生严重影响。
These studies suggest that choice blindness can occur in a wide variety of situations and can have serious implications for medical and judicial outcomes.
该研究称，视觉识别是“一种自发的心理过程，迅速而直观地发生，很少或根本没有明显的有意识思考。”
Visual recognition, reads the study, is "an automatic psychological process, occurring rapidly and intuitively with little or no apparent conscious deliberation."
研究人员还探索了如果消费者用具有多种功能的新电子产品取代旧产品将会发生什么。
The researchers also explored what would happen if consumers replaced old products with new electronics that serve more than one function.
明尼苏达大学和蒙特利尔的麦吉尔大学的一项新研究着眼于这种衰退发生的区域和程度。
A new study by the University of Minnesota and McGill University in Montreal looks at where, and how far, this decline is occurring.
研究眼泪的温妮弗雷德正在试图弄清楚这是如何发生的。
Tear researcher, Winifred, is trying to figure out how it happens.
这个空间站需要吸引前沿研究（的技术支持），但许多科学家似乎对空间站上发生的事情知之甚少。
The station needs to attract cutting-edge research, yet many scientists seem to have little idea what goes on aboard it.
考古研究发现，在壁炉中发现的木炭可以追溯到不同的时期，这表明物种的用途发生了模式上的变化。
Archaeological study of wood charcoal found in hearths dating to the various episodes of occupation indicated that the species use changed in a patterned way.
例如，对动物的研究表明，老鼠在怀孕期间经历压力会导致胎儿表观遗传发生变化，进而导致啮齿动物在成长过程中出现行为问题。
Studies of animals, for example, have shown that when a rat experiences stress during pregnancy, it can cause epigenetic changes in a fetus that lead to behavioral problems as the rodent grows up.
心理学家大卫·鲁宾说，这项研究并没有考察这一错误是否具有深刻的心理意义，“但它确实告诉了我们这种情况一般发生在哪些人身上。”
The study did not examine the possibility of deep psychological significance to the mistake, says psychologist David Rubin, "but it does tell us who's in and who's out of the group."
在一项研究中，研究人员采访了955名牵涉交通事故的人，他们中的大多数人在事故发生前都做过白日梦。
In one study, researchers interview 955 people involved in traffic accidents, the majority of them reported having daydream just before the accident.
研究人员说，这发生在第一次深度睡眠期间。
This was during the first deep sleep period, the researchers said.
建筑形态学是研究不断变化的文化和环境条件如何使建筑形式发生变化的学科。
Architectural morphology is the study of how shifting cultural and environmental conditions produce changes in an architectural form.
基于考古学界做过的所有研究，你可能认为这种情况不会再发生了。
You might think that this never happens any more, given all the research in archaeology that's been done.
早在20世纪50年代末，当医学研究人员开始将心脏病的发生与饮食联系起来的时候，国际上就开始对地中海饮食的治疗效果产生了兴趣。
International interest in the therapeutic qualities of the Mediterranean diet began back in the late 1950s, when medical researchers started to link the occurrence of heart disease with diet.
研究人员在《自然气候变化》网站上报告称，以1865年为起点，大约一半的海洋热量摄入发生在1997年之后。
Around half of ocean heat intake since 1865 has taken place since 1997, researchers report online in Nature Climate Change.
当然，我们不光要研究一个反应会不会发生，反应速率多块也是很重要的研究问题。
Of course, we'll investigate not just whether the reaction will occur, but how fast it occurs, which is really important.
国家遗产研究所科学委员会的主席 Jean-MichelLeniaud说：“已经发生的事情注定会发生。”
Jean-Michel Leniaud, the president of the scientific council at the National Heritage Institute, said: "What happened was bound to happen."
研究人员已经认识到一些可能发生的问题。
Researchers have recognized several problems that may happen.
研究人员已经证实，当人们动脑筋时，大脑中会发生生化变化，使其在注意力和记忆等认知区域更有效地发挥作用。
Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory.
由于这些数据有时相互矛盾，而且其机制也不时发生明显的变化，这些研究变得复杂起来。
The studies are complicated by the fact that the data are sometimes contradictory and the mechanisms apparently change from time to time.
一些研究表明，宣泄情绪可以减少紧张情绪，降低未来发生攻击的可能性。
Some studies suggest that catharsis leads to reductions in tension and a lowered likelihood of future aggression.
“我们开始看到人们对退休的看法发生了变化。”牛津大学人口老龄化研究所联合主任乔治·利森表示。
"We're beginning to see a change in how people view retirement," says George Leeson, co-director of the Institute of Population Ageing at Oxford.
同意“有时候打孩子屁股是可以的”的人占的比例下降到72%，虽然大多数研究者认为，实际上体罚事件发生的更频繁了。
The proportion who said it is "sometimes O.K. to spank a child" had fallen to 72%, though most researchers believe the actual incidence of it is higher.
德国当局正在派遣研究人员调查昨天晚些时候在特内里费岛发生飞机坠毁事故的原因。
The German authorities are sending investigators to discover the cause of the plane crash late yesterday on the island of Tenerife.
发表在《新英格兰医学杂志》上的一项研究估计，美国航班上每天平均会发生30起飞行中医疗紧急事件。
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies on U.S. flights every day.
一项对九年级学生的研究发现，在九年级学生中，50%的友谊每个月都会发生变化，这表明友谊极其不稳定。
One study of ninth-grade students found that 50 percent of friendships among ninth graders changed from one month to the next, signaling striking instability in friendships.
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