marker

noun

1. （表示方位的）标记，记号
   an object or a sign that shows the position of sth
   1. a boundary marker
      界标
   2. He placed a marker where the ball had landed.
      他在球落地的地方放了个标记。
2. 标志；标识；表示
   a sign that sth exists or that shows what it is like
   1. Price is not always an accurate marker of quality.
      价格并不总是质量的准确标志。
3. 记号笔；毡头笔
   a pen with a thick felt tip
4. 阅卷人；判作业的人
   a person who marks/grades students' work or exam papers
5. 紧逼防守的队员；钉人的防守队员
   a player who stays close to a player on the other team in order to stop them getting the ball

1. N-COUNT (表示方位的)标记，路标，记号;（起提示作用的）标示物
   A marker is an object which is used to show the position of something, or is used to help someone remember something.
   1. He put a marker in his book and followed her out.
      他在书里夹了一个书签后便随她出去了。
   2. ...lines of weathered stone markers sticking up from the desert.
      矗立在沙漠里的一排排饱经风吹日晒的石头路标
2. N-COUNT （品质或特点的）标志，代表
   If you refer to something as a marker for a particular quality or feature, you mean that it demonstrates the existence or presence of that quality or feature.
   1. Vitamin C is a good marker for the presence of other vitamins and nutrients in frozen food.
      维生素C的存在是冷冻食品里存在其他维生素和营养成分的很好说明。
3. N-COUNT 记号笔，毡笔(笔头较粗，由毡毛制成，用于绘画和着色)
   A marker or a marker pen is a pen with a thick tip made of felt, which is used for drawing and for colouring things.
   1. Draw your child's outline with a heavy black marker.
      用浓黑色的毡笔画出你孩子的轮廓。

1. He put a marker in his book and followed her out.
   他在书里夹了一个书签后便随她出去了。
2. Vitamin C is a good marker for the presence of other vitamins and nutrients in frozen food.
   维生素C的存在是冷冻食品里存在其他维生素和营养成分的很好说明。
3. Draw your child's outline with a heavy black marker.
   用浓黑色的毡笔画出你孩子的轮廓。
4. Building on previous animal and human research, the study identifies an electrophysiological marker for threat in the brain.
   基于之前对动物和人类的研究，该研究确定了一个反映大脑中威胁的电生理指标。
5. The selectable marker makes identification and characterization of that gene straightforward.
   选择标记可以直接对该发育基因进行识别和鉴定。
6. The scientists then indexed the DNA sequences using a genetic marker as a tag.
   然后这组科学家用一种遗传标记标定了这些病毒的DNA序列。
7. This marker would have grounded the jeep.
   这个标记使吉普车接了地。
8. He took two arrows, and he must have hit his marker.
   他中了两箭，一定是碰到他的传送器了。
9. One or more key marker beds were identified for the purpose of leasing and drilling.
   为了租地和钻井的需求，他们对比了一个或更多的关键标志层。
10. Some types of tumors can be measured in the blood with a "tumor marker".
    有些肿瘤可以通过血液中的肿瘤标志物来检测。
11. He took some arrows and then he pressed his marker, he's gone.
    他中箭了然后按下了传送器，就消失了。
12. Analysis of different resistant materials with this marker proved its specificity for the M4 gene.
    对不同抗源材料的扩增分析表明该标记是M4基因的特异标记。
13. More recently, griseofulvin has become an important phenotypic marker in Penicillium taxonomy.
    近来，灰黄霉素成为青霉属分类学中的一个重要的表型标志物。
14. Analysis of LSF level in biopsy material may one day be used as a prognostic marker for HCC.
    对活检标本LSF水平的分析，有朝一日可以被用来作为肝癌的预后指标。
15. If the data are confirmed, the marker may help clinicians personalize prostate cancer screening.
    如果该数据被确证，这一标志将帮助临床医生对前列腺癌进行个体化筛查。
16. Objective to explore the application and advance on molecular marker technology in medicinal plant researches.
    摘要目的了解分子标记在药用植物研究中的应用及进展。
17. Is the very map and marker of civilization.
    恰恰就是文明的地图和标记。
18. The prognostic value of this marker is, however, still unclear and needs further study.
    然而，这些指标的预测值还不清楚的，需要进一步研究。
19. The development of fish functional genomics and molecular marker techniques provides chance for screening functional genes or molecular markers related to disease-resistance.
    鱼类功能基因组和分子标记技术的发展为筛选鱼类抗病相关功能基因和分子标记提供了机遇。
20. You have to go as fast as you can to the marker under this helicopter.
    你有去那么快，您可以到标记下，这架直升机。
21. I think it's a marker of risk.
    我认为它是一个风险标记物。
22. Molecular marker technology is useful for assisting and speeding up selection through conventional breeding.
    分子标记技术对通过常规育种帮助和加快选育非常有用。
23. Single nucleotide polymorphisms ( SNPs) is another new genetic marker studied after human genome project.
    单核苷酸多态性是在人类基因组计划后，进行研究的一项新的遗传标记。
24. MMP-2 is one of the main metalloproteinases active in neoplasia and is a marker of the malignant phenotype.
    MMP-2是肿瘤形成中的一种主要金属蛋白酶，可做为恶性表型的标记物。
25. A negative marker can be looked at in the same manner as a positive marker ( YES).
    可以使用和正面标记（YES）同样的方法来看待否定标记。
26. GPR48 may be used as a new marker for predicting tumor cell differentiation and lymph node metastasis.
    GPR48可作为提示肿瘤分化和淋巴结转移的新标记物。
27. By using molecular marker technology, having developed a analysis method for rice variety and hybrid identification.
    利用分子标记快速、准确地鉴定杂交稻真实性和纯度研究，获安徽省科技进步一等奖。
28. Screening for this genetic marker may lead to better treatments.
    对此项遗传标记（geneticmarker）进行筛选可能会带来更好的治疗方案。

noun

1. some conspicuous object used to distinguish or mark something
   1. the buoys were markers for the channel

2. a writing implement for making a mark

3. a distinguishing symbol
   1. the owner's mark was on all the sheep

   Synonym:    markingmark