stem
stem
英[stem]美[stem]
n.茎，高脚杯的脚，烟斗柄，词干；
v.阻止；
复数：stems;
第三人称单数：stems;
过去式：stemmed;
过去分词：stemmed;
现在分词：stemming;
例句
You must stem the flow of blood from the wound.你必须止住伤口流血。
“uni-” is the stem of “unity”.uni-是unity的词干。
The stem of the mushroom is broken.这只蘑菇的梗折断了。
Cut the stem cleanly, just beneath a leaf joint.把茎切整齐点，正好切在叶根下。
Stem-cell research is supported by many doctors.干细胞研究得到了很多医生的支持。
Poor Peripheral Blood Stem Cell Mobilization or Poor Harvest?周边血干细胞驱动不良或是收集成效不佳?
Dolly's legacy includes the possibility of making patient - specific embryonic stem cell lines.多莉的遗传缺陷暗示科学家可以通过核移植技术获得病人专一性的胚胎干细胞系.
Long pointed leaf or stem ( eg of grass or asparagus ) growing directly out of the ground.长而尖的叶或茎 ( 直接从地面生出的,如草或芦荀 ).
At maturity, pods distributed along the stem which terminates in a rather dense cluster of pods.成熟的荚沿茎分布着,茎终止于一簇较密的荚.
A music theorist Chen Yi , the word stem, such as Zhang Yuan.出现了音乐理论家陈日易 、 词人张元干等.
反义词
stem的反义词之：
stern词组
from stem to stern
From one end to another.从头到尾英语四级真题
The humanities and STEM subjects should be given equal importance.
出自-2014年6月阅读原文She noticed there was a real void in quality STEM education at all levels of the public educational system.
2017年12月四级真题（第二套）阅读 Section AStudies show they're also perceived as more competent than women in STEM Science, Technology, Engineering, and Mathematics fields.
2017年12月四级真题（第二套）阅读 Section CWe all know there exists a great void in the public educational system when it comes to exposure to STEM Science, Technology, Engineering and Mathematics courses.
2017年12月四级真题（第二套）阅读 Section A英语六级真题
According to the survey, that lack of enthusiasm could stem from concerns about privacy and security.
出自-2016年12月阅读原文This inconsistency largely stems from a feeling of powerlessness.
出自-2015年12月阅读原文Recently, the UK National Stem Cell Network warned the UK could lose its place among the world leaders in stem cell research unless adequate funding and legislation could be assured.
出自-2011年12月阅读原文In the America of our own time, the great educational challenge has become an effort to strengthen the teaching of what is now known as the STEM disciplines (science, technology, engineering, and math).
出自-2010年12月阅读原文The STEM subjects are too challenging for students to learn
出自-2010年12月阅读原文America is lagging behind in the STEM disciplines.
出自-2010年12月阅读原文It is also critical for socially charged neuroscience issues such as the genetic basis for a particular behavior, the therapeutic potential of stem cell therapy for neurodegenerative diseases, or the use of animal models, areas where the public understand
2018年12月六级真题（第三套）阅读 Section C柯林斯高阶英汉双解学习词典释义
VERB
起源于;来自;由…造成
If a condition or problem stems from something, it was caused originally by that thing.
例句
All my problems stem from drink...我所有的问题都源于酗酒。Much of the instability stems from the economic effects of the war.不稳定*面多半是由战争对经济的影响造成的。VERB
阻止;遏制;制止
If you stem something, you stop it spreading, increasing, or continuing.
例句
Austria has sent three army battalions to its border with Hungary to stem the flow of illegal immigrants...奥地利已派出 3 个营的兵力去本国和匈牙利交界的边境地区阻止非法移民的流入。The authorities seem powerless to stem the rising tide of violence...当*似乎无力阻止愈演愈烈的暴力活动。N-COUNT
(植物的)秆，茎，梗
The stem of a plant is the thin, upright part on which the flowers and leaves grow.
例句
He stooped down, cut the stem for her with his knife and handed her the flower.他弯下腰，用刀替她将花茎割断，然后将花递给她。N-COUNT
(酒杯的)颈，柄脚
The stem of a wine glass is the long thin part which connects the bowl to the base.
N-COUNT
(烟斗)柄
The stem of a pipe is the long thin part through which smoke is sucked.
例句
He chewed the stem of his pipe and eyed her sceptically.他嘴里衔着烟斗柄，满腹狐疑地打量着她。N-COUNT
(语法中的)词干
In grammar, the stem of a word is the main part of it, which does not change when the ending changes.
PHRASE
从船首到船尾
If something happens from stem to stern on a boat, it involves the whole of the boat.
例句
A South African television report said the ship was ablaze from stem to stern.南非一则电视新闻报道称，那艘船从头到尾都着了火。英汉词典释义
n.
(花草的)茎, (树木的)干,梗,柄
The stem of the mushroom is broken.这只蘑菇的梗折断了。词干，语干
“uni-” is the stem of “unity”.uni-是unity的词干。（高脚酒杯的）脚；烟斗柄； 有…茎（或梗）的 ；
vt.
遏制[阻止](液体的流动等)
You must stem the flow of blood from the wound.你必须止住伤口流血。阻止；封堵；遏止
英英词典释义
Noun
1. (linguistics) the form of a word after all affixes are removed;
"thematic vowels are part of the stem"2. a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
3. cylinder forming a long narrow part of something
4. the tube of a tobacco pipe
5. front part of a vessel or aircraft;
"he pointed the bow of the boat toward the finish line"6. a turn made in skiing; the back of one ski is forced outward and the other ski is brought parallel to it
Verb
1. grow out of, have roots in, originate in;
"The increase in the national debt stems from the last war"2. cause to point inward;
"stem your skis"3. stop the flow of a liquid;
"staunch the blood flow""them the tide"4. remove the stem from;
"for automatic natural language processing, the words must be stemmed"行业词典
体育： 船首；迎风航行；舟首材；急停；制住；
冶金学： 钎杆；
化学： 主干；
医学： 茎，干(枝)：类似植物茎或干的支持结构；
植物学： 茎；
煤炭： 钎杆；向钎头传递动力，随同钎头进入钻孔的杆状或管状零件。；
电子学： 芯柱；
电工： 芯柱；
航海科技： 艏柱；
船舶： 艏柱；船体*前端，从船底到甲板，连接两侧外板和龙骨的构件。；
