The plant's stem is marked with thin green longitudinal stripes.
这种植物的茎上长有绿色细长条纹。
The main stem will extend to around 12 ft, if left to develop naturally.
如果让其自然生长，主干会延伸到12英尺左右。
He stooped down, cut the stem for her with his knife and handed her the flower.
他弯下腰，用刀替她割下花茎，然后把花递给她。
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。
Austria has sent three army battalions to its border with Hungary to stem the flow of illegal immigrants.
奥地利已派遣3个营到达与匈牙利接壤的边境处，以阻止非法移民的流入。
The stem helps hold the roots up.
茎帮助支撑根。
When the stem dies, its hormone signal also ceases.
当茎死亡时，它的激素信号也停止了。
By contrast, the large zebra lives on the masses of low-quality stem material.
相比之下，大型斑马依靠大量的低质量茎材料为生。
The first is an automatic, metabolic system whose control is centered in the brain stem.
第一种是自发的新陈代谢系统，它的控制集中在脑干上。
Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.
有毒的矿物质首先被根部吸收，然后转移到茎和叶上。
There's a lot of interests in obtaining stem cells from the blood of the umbilical cord on birth.
人们对从出生时的脐带血液中获取干细胞很感兴趣。
The good news for the field of stem-cell therapy comes from a paper published in this week's Lancet.
干细胞治疗领域的好消息来自本周发表在《柳叶刀》杂志上的一篇论文。
Different from the embryonic stem cell we talked about before, it's an example of an adult stem cell.
和我们之前谈到的胚胎干细胞有所不同，这是一个成人干细胞的例子。
Stem cell researchers have found a way to get perfectly usable stem cells from fully grown human beings.
干细胞研究人员已经找到了一种从成年人身上获得完全可用的干细胞的方法。
Many more students earn degrees in the STEM disciplines in developing countries than in the United States.
在发展中国家，获得STEM学科学位的学生比美国多得多。
In the last academic year, women accounted for more than half of all Stem postgraduates at UK universities.
在上一学年，英国大学所有Stem研究生中，女性占了一半以上。
She noticed there was a real void in quality STEM education at all levels of the public educational system.
她注意到，不同等级的公共教育体系都确实存在高质量STEM教育的缺失。
Why people are so excited about embryonic stem cells is because in nature they become all the cells of the body.
胚胎干细胞如此让人激动是因为它的天然功能就是分化成身体所有的细胞。
Arousal is at first general, with a flooding of impulses in the brain stem; then gradually the activation is channeled.
一开始觉醒是普遍的，在脑干中有大量的脉冲，然后激活作用逐渐被输送。
Native farmers were hostile towards the wheat programme because of serious crop losses from 1939 to 1941 due to stem rust.
当地的农民对小麦计划怀有敌意，因为1939年至1941年间小麦由于茎锈病而严重减产。
In 2006, Gurdon's work was developed by Yamanaka to show that a sample of a person's skin can be used to create stem cells.
2006年，山中伸弥对古尔登的研究成果进行了进一步研究，以证明一个人的皮肤样本可以用来制造干细胞。
A centrifuge separates the fat cells from the stem and regenerative cells, concentrating them into a pellet, which is then extracted.
离心机将脂肪细胞从干细胞和再生细胞中分离出来，将它们浓缩成一个小球，再萃取出来。
The range through these states is mediated by the arousal system, a network of tracts converging from sensory systems to integrating centers in the brain stem.
这些状态的变化是以激发系统作为媒介完成的，而所谓激发系统，是指从各个感觉系统汇聚到位于脑干中整合中心的一个网络。
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.
最近，英国国家干细胞网络部门警告说，如果没有足够的资金和立法保障，英国可能会失去在世界干细胞研究领域的领导地位。
All my problems stem from drink.
我所有的问题都是酗酒引起的。
The cut was bandaged to stem the bleeding.
伤口进行了包扎止血。
He pointed at me with the stem of his pipe.
他用他的烟斗柄指着我。
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