This behavioral asymmetry is thought to stem from the same preference for head turning during the final weeks of gestation and during infancy.
这种方向上的不对称性似乎是源于妊娠后期及婴儿期转头的偏好。
And, sure enough, they found these characteristics in abundance and noticed that all the strains seemed to stem from wild ancestors that lived 500 years ago.
从这一点出发，他们果真发现了许多这类特征，并且还发现似乎所有的菌种都源自于500年前的野生菌种。
Letting the cat out of the bag is supposed to stem from a trick played in old markets where buyers were duped when they thought they were buying a Suckling pig.
一般认为，“把猫从袋子里放出来”的说法源自古代集市上的一个把戏：有时，商贩会欺骗买家，在他们购买乳猪的袋子里装一只猫。
Apply professor complement to say, in fact, a lot of netizens inform against malfeasant is to stem from conscience and responsibility heart completely, award is next.
施教授补充说，事实上，很多网民举报贪官污吏完全是出于良知和责任心，奖励倒是其次的。
Stem cell researchers have found a way to get perfectly usable stem cells from fully grown human beings.
干细胞研究人员已经找到了一种从成年人身上获得完全可用的干细胞的方法。
The range through these states is mediated by the arousal system, a network of tracts converging from sensory systems to integrating centers in the brain stem.
这些状态的变化是以激发系统作为媒介完成的，而所谓激发系统，是指从各个感觉系统汇聚到位于脑干中整合中心的一个网络。
Native farmers were hostile towards the wheat programme because of serious crop losses from 1939 to 1941 due to stem rust.
当地的农民对小麦计划怀有敌意，因为1939年至1941年间小麦由于茎锈病而严重减产。
According to the survey, that lack of enthusiasm could stem from concerns about privacy and security.
调查显示，缺乏热情可能源于对隐私和安全的担忧。
Eyes twitch randomly in response to stimulation from the brain stem.
当脑干受到刺激时，眼睛会随机抽动。
Three Queens appear in a dusky barge, dark as a funeral scarf from stem to stem.
三个王后出现在一艘昏暗的驳船上，从头到尾都像葬礼上的围巾一样黑。
Dr Hwang provoked a flurry of excitement a year ago when he published a paper in Science that claimed to have cloned human embryos from embryonic stem cells.
一年前，黄博士在《科学》杂志上发表论文，宣称他已使用胚胎干细胞克隆出了人类胚胎，这在当时激起了一片兴奋。
At the same time, if such help is to have public support, the right lessons need to be drawn from the return of stem rust.
与此同时，如果这样的帮助有公众的支持，那正确的教训应该从茎秆锈病的重袭开始。
The researchers say the technique could allow pigs to grow human organs from patient's stem cells for use as transplants.
研究人员称这项技术能够利用患者的干细胞，让猪长出人体器官以用于移植。
The findings suggest that it may be possible one day to isolate and culture these stem cells from women’s ovaries, should they also exist in humans.
这一发现表明或许有一天我们就能够从女性的卵巢里将这些干细胞隔离出来 因为它们一定也存在于人类的身体中.
The next step is to try to create stem cells without the leftover chromosomes from the egg.
下一步就是使得到的干细胞不再有多出来的那条来自卵细胞的染色体。
Thus, the value of going to a movie together does not stem mainly from the quality of the movie but from watching it together.
这样，一起去看一场电影的价值并非主要来自电影的质量，而是来自你们一起看这件事。
Scientists are using a new stem cell technique allowing them to turn skin from patients into small pieces of brain.
科学家使用一种新的干细胞技术，使他们可以将病人的皮肤转变为小块的大脑。
Other researchers have converted skin cells directly into nerve cells, and previous studies have worked out ways to grow heart cells from embryonic-like stem cells.
另外一些研究者直接将皮肤细胞转变成神经细胞，早前的研究已经找到了由胚胎样干细胞成长为心脏细胞的方法。
In truth, the biggest threats to Russia's future stem not from its "enemies" but from internal weaknesses, some of them self-inflicted.
本质上，俄罗斯未来最大的威胁并非来自她的“敌人”，而是源于内部的虚弱，其中有些是自己造成的。
The birth of yet another laboratory mouse is hardly worth noting — unless the furry creature is the first to be developed from stem cells that do not involve embryonic cells.
通常一只还未出生的实验室老鼠很难引人关注，除非这个长毛的动物将是首个用干细胞培育出的老鼠（不涉及胚胎版细胞）。
To restore hearing, researchers still have to figure out how to produce millions of hair cells, prevent stem cells from forming tumors, and translate the work to human cells.
为了重建听力，科学家们还必须研究出如何大量生产毛细胞，如何避免干细胞形成肿瘤，以及如何应用于人类的细胞。
Mr Derrick noted that verbal intervention from officials had done little to stem the rise.
德里克指出，官员的口头干预对抑制日元的上涨几乎没有作用。
For years, private financing has been used to create embryonic stem cell lines, mostly from discarded embryos from fertility clinics.
多年来，私人资金已用于制造胚胎干细胞系，绝大多数是从妇产科医院丢弃的胚胎中制造出来的。
For years, private financing has been used to create embryonic stem cell lines, mostly from discarded embryos from fertility clinics.
多年来，私人资金已用于制造胚胎干细胞系，绝大多数是从妇产科医院丢弃的胚胎中制造出来的。
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