章节大纲

  • L
    ::L L L

     

    labia (singular, labium)
    ::阴唇(、)

    “lips” of the vulva, consisting of folds of tissue that protect the urethral and vaginal openings
    ::阴道的“脂片”,由保护尿道和阴道开口的组织折叠组成。

     

    labor
    ::劳动力劳动 劳动力

    general term for the process of childbirth, which includes three stages: dilation of the cervical canal, birth of the child, and delivery of the placenta (afterbirth)
    ::分娩过程的一般术语,包括三个阶段:宫颈运河放大、婴儿出生和胎盘分娩(产后)

     

    lactase
    ::晶晶体

    enzyme needed to digest the milk sugar lactose
    ::消化乳糖乳甘甘甘甘甘甘甘甘甘甘甘甘甘蔗所需的酶

     

    lactase persistence
    ::乳腺持久性

    ability to produce lactase and digest milk after early childhood
    ::有能力在幼儿期后生产乳腺和消化牛奶

     

    lactation
    ::哺乳

    production of breastmilk to feed an infant
    ::生产母乳喂养婴儿

     

    lactic acid fermentation
    ::乙酸发酵

    type of anaerobic respiration that includes glycolysis followed by the conversion of pyruvic acid to lactic acid and the formation of NAD +
    ::厌氧呼吸类型的厌氧呼吸类型,包括凝解,随后将丙酸转化成杀菌酸,形成NAD+

     

    lactose
    ::乳甘油

    disaccharide sugar that makes up 2-8 percent of milk by weight
    ::按重量计算占牛奶重量2%-8%的无焦糖

     

    lactose intolerance
    ::乳糖不容性

    inability to digest the lactose in milk, generally because of lack of the enzyme lactase
    ::无法消化牛奶中的乳糖,一般由于缺乏酶乳糖酶,因此无法消化乳糖。

     

    language
    ::语言 语言 语言

    communication of thoughts and feelings through a system of arbitrary symbols called words that are represented by vocal sounds and in many cases also by written marks
    ::通过一种任意的符号系统来交流思想和感情,称为用声音和在许多情况下也用书面标记表达的词语。

     

    lanugo
    ::拉努戈

    fine, colorless hair that covers a fetus’s face and body until it is shed close to the time of birth
    ::覆盖胎儿脸部和身体直至接近出生时的细细、无色头发,直至接近出生时

     

    large intestine
    ::大肠

    organ of the digestive system that removes water and salts from food waste and forms solid feces for elimination
    ::将水和盐类从食物废物中除去并形成固体粪便以供消除的消化系统器官中的水和盐类

     

    larynx
    ::Lalynx 喉角

    organ of the respiratory system between the pharynx and trachea that is also called the voice box because it contains the vocal cords that allow the production of vocal sounds
    ::Pharynx和气管之间的呼吸系统器官,也称为声音盒,因为它含有可以产生声音的声带。

     

    last universal common ancestor (LUCA)
    ::最后一个普遍共有祖先(LUCA)

    hypothetical early cell (or group of cells) that gave rise to all subsequent life on Earth
    ::产生地球上所有随后生命的假设早期细胞(或一组细胞)

     

    lateralization
    ::横向对等化

    concentration of particular functions in one hemisphere of the cerebrum of the brain
    ::大脑脑部一个半球中特定函数集中

     

    law of conservation of mass
    ::保护质量法

    law stating that mass is neither created nor destroyed in chemical reactions
    ::法律规定在化学反应中既不产生也不摧毁质量

     

    law of independent assortment
    ::独立排序法独立

    Mendel’s second law stating that factors controlling different characteristics are inherited independently of each other
    ::门德尔的第二项法律规定,控制不同特性的因素是相互独立继承的

     

    law of segregation
    ::种族分隔法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、 种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、 种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、 种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、种族隔离法、

    Mendel’s first law stating that the two factors controlling a characteristic separate and go to different gametes
    ::Mendel的第一部法律指出,控制一个特性的两种因素是分开的,然后转到不同的调子上。

     

    leptin
    ::

    hormone produced mainly by fat cells that normally inhibits appetite by inducing a feeling of satiety
    ::主要是脂肪细胞产生的激素,这些脂肪细胞通常诱发一种讽刺的感觉,从而抑制食欲。

     

    leukemia
    ::白血病

    group of cancers of the blood-forming tissues in bone marrow
    ::骨髓血型组织癌症组别

     

    leukocyte
    ::白血球

    white blood cell produced by bone marrow to fight infections
    ::骨髓生成的白血细胞,以对抗感染

     

    Leydig cell
    ::莱迪牢房

    type of cell found between seminiferous tubules in the testes that produces and secretes testosterone
    ::在产生睾丸和分泌睾丸激素的细细管中发现的细胞类型

     

    life cycle
    ::整个生命周期

    series of stages a n organism goes through from one generation to the next
    ::生物体从一代到下一代经历一系列阶段

     

    life expectancy
    ::预期寿命

    average time an individual is expected to live, or the average age at death
    ::平均平均预期寿命或平均死亡年龄

     

    ligament
    ::顶部

    band of fibrous connective tissue that holds bones together
    ::将骨头凝结在一起的纤维结结结组织

     

    limiting factor
    ::限制性因数

    any factor that constrains the population size of a species in an ecosystem
    ::限制生态系统中物种种群规模的任何因素

     

    linked genes
    ::链接的基因

    genes that are located on the same chromosome
    ::同一染色体上的基因

     

    Linnaean classification system
    ::林内人分类制度

    system of classifying organisms based on observable physical traits; consists of a hierarchy of taxa, from the kingdom to the species
    ::根据可观测到的物理特征对生物进行分类的制度;由从王国到物种的分类分类分类的等级制度组成。

     

    lipid
    ::脂脂

    class of biochemical compounds that includes fats and oils
    ::含有脂肪和油类的生化化合物类别

     

    liver
    ::肝脏

    organ of digestion and excretion that secretes bile for lipid digestion and breaks down excess amino acids and toxins in the blood
    ::分解脂肪消化和分解血液中多余的氨基酸和毒素

     

    locus
    ::地 地 地 地

    position of a gene on a chromosome
    ::染色体上的基因位置

     

    logistic growth
    ::物流增长

    pattern of population growth in which growth slows and population size levels off as the population approaches the carrying capacity
    ::人口增长模式模式,随着人口接近承受能力,增长放缓,人口规模水平下降

     

    lower gastrointestinal (GI) tract
    ::下胃肠道(GI)

    part of the GI tract that includes the small and large intestines
    ::包括小肠和大肠在内的GI大道部分

     

    lung
    ::肺

    one of two paired organs of the respiratory system in which gas exchange takes place between the blood and the atmosphere
    ::血液和大气之间发生气体交换的呼吸系统两对一的器官之一

     

    lung cancer
    ::肺癌

    malignant tumor characterized by uncontrolled cell growth in tissues of the lung
    ::肺组织细胞生长失控的恶性肿瘤

     

    luteinizing hormone (LH)
    ::润滑荷尔蒙(LH)

    pituitary gland hormone that stimulates the testes to secrete testosterone and the ovaries to secrete estrogen
    ::刺激睾丸分泌睾酮 卵巢分泌雌激素

     

    lymph
    ::淋巴

    fluid that leaks out of capillaries into spaces between cells and circulates in the vessels of the lymphatic system
    ::液流从毛细管渗出进入细胞之间的空隙,在淋巴系统容器中循环

     

    lymphatic system
    ::淋巴系统

    system of the body that produces lymphocytes and filters pathogens from lymph and blood
    ::产生淋巴细胞和从淋巴和血液中过滤病原体的人体系统系统

     

    lymph node
    ::淋巴结

    one of many small structures located along lymphatic vessels where pathogens are filtered from lymph and destroyed by lymphocytes
    ::淋巴动物体内许多小结构之一,其中病原体从淋巴细胞中过滤,并被淋巴细胞摧毁。

     

    lymphocyte
    ::淋巴细胞

    type of leukocyte produced by the lymphatic system that is a key cell in the adaptive immune response to a specific pathogen or tumor cell
    ::淋巴系统生成的白血清,淋巴系统是对特定病原体或肿瘤细胞的适应性免疫反应中的关键细胞之一。