The administration is trying to stem the flood of refugees out of Haiti and into Florida.

政府正设法阻止大批逃离海地的难民涌入佛罗里达。

《柯林斯英汉双解大词典》

When they reach their full height, flowers grow out from the stem.

当它们长到完全高度时，花朵从茎上长出来。

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That’s not the only stem cell news coming out of Berlin this week.

这不是本周唯一一桩出自于柏林的干细胞新闻。

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It turns out that blood within the umbilical cord is also a rich source of stem cells and again specific to a particular patient.

研究发现脐带血中,也有丰富的干细胞资源,并且对一些特殊的病人有特别的意义

耶鲁公开课 - 生物医学工程探索课程节选

There are services now, we don't know yet how to get those stem cells out of cord blood and how to use them for therapies, but it's reasonable to think that we might know about this in 30 years.

现在已经有提供这样的服务了,我们现在还不知道如何从脐带血中,提取这些干细胞并用于治疗,但有理由相信,在未来的30年内我们会知道的

耶鲁公开课 - 生物医学工程探索课程节选

When the good luck runs out, stem rust can destroy the entire harvest in an infected area.

ECONOMIST: Wheat rust and world farming

Check out the STEM Challenge and encourage a young person in your life to start designing video games.

FORBES: Sesame Workshop Wants Your Kid to Design Video Games

Dirks showed that some of the immature-looking cells from his patients could form tumorlike clumps in the test tube, unlike most other cells from the tumors, but he didn't have a method to pluck out the stem cells.

FORBES: Cancer Killer