英语释义

• cylinder forming a long narrow part of something

• a turn made in skiing; the back of one ski is forced outward and the other ski is brought parallel to it

• stop the flow of a liquid;

  "staunch the blood flow"

  "them the tide"

• (linguistics) the form of a word after all affixes are removed;

  "thematic vowels are part of the stem"

• remove the stem from;

  "for automatic natural language processing, the words must be stemmed"

• cause to point inward;

  "stem your skis"

• grow out of, have roots in, originate in;

  "The increase in the national debt stems from the last war"

• front part of a vessel or aircraft;

  "he pointed the bow of the boat toward the finish line"

• the tube of a tobacco pipe

• a slender or elongated structure that supports a plant or fungus or a plant part or plant organ

片语

Akebia Stem木通

brain stem脑干

stem rust桿锈；茎锈病

from stem to stern完全；从头到尾

Stem Mut阀桿螺母

stem seal阀桿密封；芯轴密封

Orientvine Stem青风藤粉末

Stem Cells干细胞（stem cell的复数）

drill stem[机] 鉆柱；[机] 鉆桿；鉆具

main stem干线；主街

valve stem[机] 阀桿

hemopoietic stem cell[组织] 造血干细胞

stem cell[细胞] 干细胞，骨髓干细胞

rising stem升桿

stem borer[植保] 蛀茎虫；[植保] 天牛；蔗螟；茶天牛

stem post首柱；艏柱

stem from起源于

英汉例句

• the scientists claim the rat stem cells grew in the niche left by the absent mouse pancreas and so almost any organ could be produced in this way.

  科学家们声称大鼠干细胞刚好在小白鼠缺失的胰腺所在位置生长，所以几乎任何器官都可以通过这种方法生成。

• if you’ve got extra cells of one type and need another, why go all the way back to a stem cell?

  如果你有一种类型的多余细胞，还需要另外一种类型的细胞，干嘛还要回到干细胞上去呢？

• like other fields of endeavour, science has fashions—and one of its most fashionable areas at the moment is the study of stem cells.

  和其他领域一样，科学研究也有某种时髦的存在，而现今最为热门的领域就是干细胞的研究。

• by looking at the hair follicles under microscopes, they saw when the stem cells turned into other cell types and linked the change to the graying hair.

  通过在显微镜下观察这些毛囊，他们看到了何时干细胞变异为其他细胞以及这些变异如何与毛发变白联系在一起。

• he wants italy to stop bombing libya to stem the flow of refugees across the mediterranean.

  他希望意大利停止轰炸利比亚，以阻止跨地中海的难民潮。

• they are a special risk with stem cells precisely because such cells can turn into any other sort.

  对干细胞来说他们是一种特殊的风险，因为这种细胞能分化成任何其他种类。

• next, a centrifuge separates the fat cells from the stem and regenerative cells, concentrating them into a pellet, which is then extracted.

  ??然后，通过离心将可再生的干细胞从脂肪细胞中分离出来，将其浓缩成微粒状，再萃取出来。

• since stem cells have yet to turn into specific cell types, biologists expected them to be extra sensitive to the environment, and this does indeed seem to be the case.

  鑒于干细胞目前尚不能转化成特定类型的细胞，生物学家现在期望它们对环境能够有非常敏感的反应，而事实似乎的确如此。

• as part of the multi-disciplinary design network, we have investigated how design practice and education can work more closely with business and stem subjects.

  作为多学科设计网络中的一员，我们研究了设计实践和设计教育如何能够与商业和stem项目更紧密的结合。

• but you have no idea of where each branch, leaf, stem and flower will be a year from now, and if you say you do then you「re really only guessing.

  但是，你完全不知道一年后每个枝条、叶子、树茎和花朵将会长成什么样子。除了随意猜猜之外你又能说出个什么所以然来呢。

• 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。

• 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。

• two research teams in the us and japan have made embryonic stem cells – or something very like them – directly from human skin cells, without having to destroy an embryo in the process.

  美国和日本的两个研究小组已直接从人体皮肤细胞中提取出胚胎干细胞（或非常类似的细胞），同时在这一过程中没有破坏胚胎。

• hollywood studios and media companies are vying to boost their online businesses, in part to stem online piracy of their content and also because of the higher margins they receive on digital sales.

  好莱坞的电影公司和媒体公司纷纷加大其在线业务的竞争力，以阻止其内容的网上盗版，也由于他们在数字销售方面得到丰厚利润。

• stem derivation is not applied to out-of-vocabulary words.

  词干推导不会应用到词汇表之外的词汇。

• science is the solution to stem rust, not the cause of its return.

  科学是茎秆锈病的解决办法，而不是其重袭的原因。

• for this study, she and her colleagues exposed mice to radiation and drugs used in chemotherapy, then monitored changes in the color of their fur as well as the status of their stem cells.

  在这项研究中，她和她的同事对老鼠进行辐射并使用了用于化学疗法中的药品，然后监测老鼠皮毛颜色的变化以及其干细胞的状态。

• like a rock that fails to stem the river in its flow, so the death of a loved one should not stop life in its stride.

  就像一块石头，它不能阻止江河的流动一样，心爱人的死亡不应当阻止你大踏步地前进着的生活。

• the stem and leaves of the plant are toxic, and even the potato itself is toxic.

  土豆植物的茎和叶是有毒的，甚至土豆本身也是有毒的。

相反词

stern(Stern) （英、以、法、瑞典、西）斯特恩（人名）