1.（花草的）茎；（花或叶的）梗，柄the main long thin part of a plant above the ground from which the leaves or flowers grow; a smaller part that grows from this and supports flowers or leaves
2.（高脚酒杯的）脚the long thin part of a wine glass between the bowl and the base
3.烟斗柄the thin tube of a tobacco pipe
4.有…茎（或梗）的having one or more stems of the type mentioned
a long-stemmed rose一枝长茎玫瑰
5.词干the main part of a word that stays the same when endings are added to it
‘Writ’ is the stem of the forms ‘writes’, ‘writing’ and ‘written’.writ 是 writes、writing 和 written 三个词的词干。
1.~ sth阻止；封堵；遏止to stop sth that is flowing from spreading or increasing
The cut was bandaged to stem the bleeding.伤口已包扎止血。
They discussed ways of stemming the flow of smuggled drugs.他们讨论了遏制走私毒品流通的办法。
The government had failed to stem the tide of factory closures.政府没有控制住工厂的倒闭潮。
THE 20S ARE LIKE the stem cell of human development, the pluripotent moment when any of several outcomes is possible.
这些20来岁的人就像是人类发展当中的干细胞，是不同结果都有可能发生的多潜能性时刻。
It would be better to derive human stem cell lines from the body's mature cells, he said, a method that researchers are still working on.
由身体成熟细胞培养为人类胚胎干细胞会是一个更好的办法，不过研究人员还在努力研究这项技术。
"So it is going to be interesting to see if prions play any role in demyelinating diseases that stem from the brain, " he says.
“如果小蛋白在脑部的其他疾病中都有影响那就更有趣了”，他说。
Embryonic stem cells are the source of every cell, tissue and organ in the body.
身体中的每一个细胞，组织和器官都来源于胚性干细胞。
In monkeys, the stem might not have bound to cells or might have latched on in a manner that did not trigger a response.
在猴子体内，抗体的Fc区域可能并不会黏附在细胞上，或是即使黏附在细胞上也无法启动免疫反应。
Spermatogonial stem cells (SSCs) are the only stem cells in the body that transmit genetic information to the next generation.
精原干细胞是机体内唯一一个能传递遗传信息至下一代的干细胞。
But a modified approach that does not involve viruses is likely to be the ultimate way of making human stem cells.
一种改良的没有病毒参与的方法可能是制造人体干细胞的最终方式。
Adipose stem cells have been used in numerous centers for cosmetic and reconstructive applications in humans, March said.
脂肪干细胞已经在很多中心被用于人类美容和整形中。
The stem of everyone eager, the sweat bedewed clothes, flow full ZHANG ZHANG's smiling face, hope the whose on the faces is all red all.
大家干得可起劲了，汗水沾湿了衣服，流满了张张笑脸，望望谁的脸上都是红通通的。
The allied air strikes against Libya are presenting a new challenge for the Bank of Japan in its efforts to stem the rise of the yen.
多国部队对利比亚的空中打击，正在对日本央行（BankofJapan）阻止日圆升值的努力构成新的挑战。
For all the innovation of the past decade, nobody had been able to stem the flow of money out of the business.
尽管在过去的10年里进行了种种创新，但没有人能够阻止资金源源不断地流出音乐行业。
Oddly enough, it was one that most Americans support: it would have expanded federal funding for embryonic stem-cell research.
说也奇怪，这是一项大多数美国人都支持的法案——加大联邦政府对胚胎干细胞研究的资助。
He said authorities would collaborate with other jurisdictions to stem the flow of drugs at the source.
李明逵又表示，警方会与外地执法部门加强合作，从源头上堵截毒品。
Straight ahead of her, as though it were a rose on a stem .
在她躯干的前方，宛如一朵玫瑰缀在长长的枝条上。
He observed that, at night, a plant's leaves drooped next to the sides of the stem but in the morning they rose as if to worship the sun.
他发现，植物的叶子在夜间低垂于茎干的两侧，但到了早晨，这些叶子又升直了“身板”，似乎在向冉冉升起的太阳崇拜致意。
Professor Lovell-Badge, however, said the Chinese paper did not prove that the eggs that gave rise to babies came from the stem cells.
然而路夫.巴德教授说这篇论文不能证实那些能够繁殖小老鼠的卵子来自于干细胞。
We believe that if you can't stem the bleeding, you risk losing up to 4% of your market share within the next six to 12 months.
我们相信如果你不能悬崖勒马的话，在未来的六到十二个月中面临丧失近4%市场份额的风险。
The reason embryonic stem cells are valued by scientists is that the cells' descendants can turn into any other sort of body cell.
科学家们认为胚胎干细胞有价值是因为，胚胎干细胞可以发育成为任何其他种类的体细胞。
Marban said he made the discovery accidentally while trying to reproduce cardiac stem cells.
马班说，他在试图繁殖心脏干细胞时意外发现这个结果。
Even through the twilight they could see that clinging to its stem against the wall was the long ivy leaf.
即使透过暮光他们也能看到那片长长的常青藤叶子，靠着砖墙，仅仅抱住梗茎。
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