| 单词 | tooth |
| 释义 | tooth[tu:θ]n. 牙齿, 齿状物, 爱好vt. 装以齿, 将...切成齿状vi. 啮合【医】 牙相关词组:have a sweet toothlong in the toothtooth and nailto fight tooth and nail tooth tooth AHD: [t›th] D.J. [tu8G]K.K. [tuG]n.（名词） 【复数】 teeth[t¶th] 1. One of a set of hard, bonelike structures rooted in sockets in the jaws of vertebrates, typically composed of a core of soft pulp surrounded by a layer of hard dentin that is coated with cement or enamel at the crown and used for biting or chewing food or as a means of attack or defense.牙，齿：脊椎动物上下颚的槽臼中扎根的一排坚硬，骨状物体，典型的结构是中间为一软体，后面包围着一层坚硬的牙本质，牙本质外为一由钙质或采釉质组成的牙冠，牙齿可用来撕咬或咀嚼食物，还可用作进攻或防御的工具2. A similar structure in invertebrates, such as one of the pointed denticles or ridges on the exoskeleton of an arthropod or the shell of a mollusk.（其他动物的）齿：非脊椎动物的类似器官，例如节肢动物的外骨骼或软体动物的外壳上的尖锐小齿或小突起3. A projecting part resembling a tooth in shape or function, as on a comb, gear, or saw.类齿物：在形状或功能上与牙齿相近的突出部分，例如梳子、齿轮或锯子上的4. A small, notched projection along a margin, especially of a leaf.Also called dent 2齿状突出：物体边缘呈V形的狭小突出，尤指树叶的也作 dent25. A rough surface, as of paper or metal.粗糙表面：粗糙表面，如纸张或金属的6. Something that injures or destroys with force. Often used in the plural:毁灭力量：用武力进行伤害或毁灭的东西。常常用作复数：the teeth of the blizzard.暴风雪的毁灭力量7. teeth Effective means of enforcement; muscle:teeth 决定手段，力量：实现目的的有效手段；肌肉：“This . . . puts real teeth into something where there has been only lip service”(&b{Ellen Convisser})“过去这件事不过口头说说而已，现在这样做就有解决的力量了”(埃伦·康维瑟)8. Taste or appetite:口味，食欲：She always had a sweet tooth.她总有很好的口味v.（动词） toothed,tooth.ing,tooths[t›th, t›Y] v.tr.（及物动词）1. To furnish (a tool, for example) with teeth.给（例如工具）安装齿状物2. To make a jagged edge on.使成齿状v.intr.（不及物动词）To become interlocked; mesh.啮合：咬合在一起；融合习惯用语:get (one's) teeth into 或 sink (one's) teeth into 【俚语】 To be actively involved in; get a firm grasp of.积极地参与其中；牢牢地抓住show (one's) teeth 或 bare (one's) teeth To express a readiness to fight; threaten defiantly.示威：表现准备战斗；凶狠地进行威胁to the teeth Lacking nothing; completely:全副地：不缺少任何东西的；全部地：armed to the teeth; dressed to the teeth.武装到牙齿；全副打扮语源:1. Middle English 中古英语 2. from Old English t½th * see dent- 源自 古英语 t½th *参见 dent- 注释:Eating, biting, teeth, and dentists are all related, as is well known,but the relationship goes further than one might think,that is, into the roots of the wordseat, tooth, and dentist. The Proto-Indo-Europeanroot.ed-, meaning “to eat” and the source of our wordeat, originally meant “to bite.” A participial form of.ed- in this sense was .dent-, “biting,” which came to mean “tooth.”Our wordtooth comes from .dont-, a form of.dent-, with sound changesthat resulted in the Germanic word.tanthuz. This word became Old Englisht½th and Modern English tooth. Meanwhile the Proto-Indo-European form.dent- itself became in Latin d¶ns (stem dent- ), “tooth,”from which is derived our worddentist. We find a descendant of another Proto-Indo-European form·(o)dont- in the word orthodontist. 我们都知道吃、咬、牙齿、牙医都是紧密相联的，但它们之间的关系比我们所想象的还有紧密，甚至eat，tooth 和 dentist 的词根也互相联系。 在原始的印欧语系中，词根ed- 的意思是“吃”， 我们的eat 这个词的原意是“咬，啃”。 作为这个意思的-ed 的分词形式是 dent- ，意为“咬”， 后来转变成“牙齿”的意思。现在tooth 这个词来源于 dont- ， dent- 的一个变形， 随着声音的变化，这个词在日耳曼语言中成了tanthuz 。 然后，由这个词产生了古英语的toth 和现化英语的 tooth 。 同时dent- 这一原始印欧词语在拉丁语中变成了 dens （词根 dent- )， 意为“牙齿”，由此衍生出dentist 这个词。 在orthodortist 这个词中，我们可以发现，这个原始印欧语言的另一形式 (O)dont- 的踪影 |
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