Researchers say the speech impediment appears to stem from a defectin the gene that regulates the way brain cells break down and recycle waste products.

VOA: standard.2010.02.11

Israel's acceptance of a relationship with God doesn't stem from mystical introspection, or philosophical speculation, Levenson says.

犹太人接受与上帝的关系并不来自于,神秘的内省，或者是出于投机心理，Levenson说。

耶鲁公开课 - 旧约导论课程节选

stem cell researchers have found a way to get perfectly usable stem cells from fully grown human beings.

干细胞研究者已经找到了一种方法，
可以从成年人身上获取可用的干细胞。

干细胞和伦理 - SpeakingMax英语口语达人

Stem cells from very early embryos are able to grow into any tissue in the body.

VOA: special.2009.04.07

All the goods of civilization, Hobbes tells us, stem from our ability to control pride.

霍布斯告诉我们说，文明之所以文明，源自于我们对追求荣誉之心的克制。

耶鲁公开课 - 政治哲学导论课程节选

But the flow from the stem tip prevents them from doing this.

VOA: special.2009.10.13

There's a lot of interest in bone marrow and the stem cells that come from bone marrow and there's a couple of reasons for this.

人们对骨髓以及从骨髓中,提取的干细胞有着浓厚的兴趣,这其中有多种原因

耶鲁公开课 - 生物医学工程探索课程节选

Spats within the opposition stem largely from ideological differences among the three opposition parties which consist of a conservative Islamic group that caters to the Malay Muslim majority;

VOA: standard.2009.12.21

So the idea is, if you can take a cell... you can take a stem cell from your body

所以如果你能够取得一个细胞……如果你能够从你体内取得一个干细胞，

关于干细胞的研究 - SpeakingMax英语口语达人

The growing strains stem largely from Ankara's increasing criticism of Israel's occupation of Palestinian territory, and more recently, Ankara' canceled joint military exercises with Israel scheduled for later this month.

VOA: standard.2009.10.27

is that the, like the best stem cells come from human embryos.

是因为最好的干细胞来自于人类的胚胎。

干细胞和伦理 - SpeakingMax英语口语达人

At The Rockefeller University in New York, she is currently studying how skin forms from precursor stem cells, looking for clues that could help researchers understand how defective stem cells can cause cancers and other disorders.

VOA: standard.2010.03.29

The other is that it's possible to get stem cells from patients, from bone marrow.

另外一个原因就是从病人的骨髓中,取得干细胞是可行的

耶鲁公开课 - 生物医学工程探索课程节选

It's this - its cells in this region here, this inner cell mass that that's the source of embryonic stem cells, cells from inner cell mass here.

就是这个,在这片区域的胚胎细胞,即内细胞群,而胚胎干细胞的来源所在,就是源自这里的内细胞群

耶鲁公开课 - 生物医学工程探索课程节选

Adult stem cells are acquired in some fashion from an adult organism.

成人干细胞是用某些方式,从成人体内提取的

耶鲁公开课 - 生物医学工程探索课程节选

There's a lot of interest in obtaining stem cells from the blood of the umbilical cord on birth.

从出生时的脐带血中取得一些干细胞,也很有趣

耶鲁公开课 - 生物医学工程探索课程节选

Those stem cells from the blood are capable of becoming all those cells in the blood.

这些血液中的干细胞,能够成为任何血细胞

耶鲁公开课 - 生物医学工程探索课程节选

Those are obvious what the differences are, embryonic stem cells are derived from embryos .

这些名称就明确揭示了它们之间的区别,胚胎干细胞是源自于胚胎

耶鲁公开课 - 生物医学工程探索课程节选

But from what I know, generally the more religious groups tend to be opposed to stem cell research,

但是一般来说，就我所知越是反对干细胞研究的人，

关于干细胞的研究 - SpeakingMax英语口语达人

To find stem cells that they can move from one kind of pathway to another.

去找那些能够,从一种分化途径转到另一种的干细胞

耶鲁公开课 - 生物医学工程探索课程节选

This pluripotent stem cell from bone marrow is an example of a stem cell, an adult stem cell, a stem cell that could be identified from the blood.

这种骨髓中的多能干细胞,是干细胞的一个代表,一个成人的干细胞,可以在血液中检测到的

耶鲁公开课 - 生物医学工程探索课程节选

Well, it would be useful because if I could take cells from the skin, find stem cells in the skin and then de-differentiate them so that they were now capable of becoming liver, or brain, or things that they're not going to become in their normal site, then that could be a very powerful tool for medicine.

这是因为,如果我能取一些皮肤细胞,找一些皮肤干细胞,并将它们去分化,那它们就能分化成肝脏,大脑或其他一些,它们原本分化不出来的细胞,这可以成为一个医学利器

耶鲁公开课 - 生物医学工程探索课程节选