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"All genes are encoded by DNA and the DNA is present in the chromosomes in the cell nucleus and telomeres, they are the ends of the chromosomes and they have an important function to protect the chromosomes and maintain the integrity of the chromosomes."
VOA: special.2009.10.07
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Particularly if you compare them with hair cells that are present in the mammalian and the human and mouse cochlea.
尤其是与哺乳动物如人和老鼠的,耳蜗中的毛细胞相比。
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The minerals are present in small amounts in food and as a function of body weight as well.
矿物质,在食物中所占比例非常小,在体重中所占比例也非常小
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Pro-government Basij militia members are also reported to be present in large numbers on campuses across the country.
VOA: standard.2009.12.07
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I'm not going to talk about them in detail but please look at that to remind yourself of those kinds of specialized sub-cellular units which are present in cells in humans but not present in bacteria.
我就不再赘述了,不过请你们看看书,回忆一下哪些特化的亚细胞结构单元,是人类细胞有,而细菌没有的
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"In the present dispensation we are in this country, we are pregnant with a lot of problems,".
VOA: standard.2009.07.30
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no surprise] as we refer to the objects they are meant to present - a defect in a literary text."
当我们讲到它们所想要表现的东西时,但这正是文学作品的一个缺点“
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"What we are trying to do is to present an incomplete specimen in a complete way.
VOA: standard.2009.12.08
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It's all similar in that it reminds us of the connection that we have, when we really are feeling fully present, and not mindless, and unaware of everything around us, and our place and our connection.
大同小异，都提醒我们,我们之间的联系，我们真切地感受到当下，而不是漫不经心，不觉周围事物，不知我们之所在和我们的联系。
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Portraits of the leader, from his youth to the present, are everywhere in the capitol.
VOA: standard.2009.08.29
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There are all kinds of different definitions and companies like to do it their own way because they want to present themselves in the best way to the public.
有各式各样的框架,公司可以任意选择,因为公司都希望,对外表现自己最好的一面
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"What you've got here is a legal issue and a political issue and both of those are very much in play at the present time,".
VOA: standard.2010.01.30
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The danger is that it's being purified from patients that have a disease and so you want to make sure that there's not other diseases that are present in that sample at the same time.
危险在于,这是从带有疾病的病人,身上纯化出来,因此你想确保,在那个样本中不会同时,携带其它疾病
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Skilled birthing attendants are present at 25 to 30 percent of births in Afghanistan.
VOA: standard.2010.03.07
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Out of all the genes that are on the human genome which fraction is this particular cell using, which fraction is it expressing determines what proteins are present in the cell, determines what work or what activities the cell can engage in.
人类基因组全部基因中的,特定细胞所表达的基因片段,细胞表达的是哪段基因,决定了细胞中存在什么样的蛋白,决定了细胞会有什么样的功能,或者参与何种生命活动
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At present,there are pockets in areas of Haiti and the U.N.security forces are working with the Haitian national police to address those pockets as they arise.
VOA: standard.2010.01.19
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You can also use PCR to identify specific genes that are present in a biological sample.
你也可以利用PCR技术去识别,一个生物样本中的某段特定基因
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"At present these are not really implemented in that manner in many countries."
VOA: standard.2009.11.02
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When estrogen is present it can enter cells in the vicinity and it can bind to receptors that are deep inside cells.
雌激素能够进入到邻近的细胞中,并能够与细胞内部的受体相结合
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"It is not a good thing for senior officers to be making derogatory remarks about their commanders, their political superiors, in any kind of setting, certainly not in a formal setting and certainly not when the news media are present."
VOA: standard.2010.06.22
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In any event, this is some interesting research opportunity, so again, no obligation, you don't have to do this, I won't even know if you are or not, but I just thought I would present these in the case you might find them interesting things to do.
不管怎样,这都是些不错的研究机会,不过不是强制的,我甚至都不知道你们参加与否,不过我还是会把这些放在这里,这样大家可能会找到一些有趣的事情去做
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If you looked at the antibodies that were present in the blood, for example, you would find that most of those antibodies are IgM during this initial period of antibody concentration rise.
如果你现在观察血液中存在的抗体,举个例子,在初次免疫的抗体浓度上升阶段,你将会发现大部分的抗体都是IgM
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