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单词 natural selection
释义

natural selection

英汉-汉英词典
[生]物竞天择说；自然选择
词组 | 习惯用语
您要查找的是不是：
    Natural Selection Theory 自然选择学说；自然淘汰理论；自然选择理论；自然选择说
    Natural Selection and Evolution 自然选择与进化；自然选择与演化
    lateral deflection 横向偏转; 横向挠曲; 旁向偏转; 侧向偏转;
    Unnatural Selection 非自然选择；非自然竞择；违天择；蠕虫战争
    actural deflection 实际挠度
    lateral deflection angle 方向提前角
    secondary natural selection 次生自然选择
natural selection [进化] 自然选择；物竞天择说
theory of natural selection 自然选择学说
英语例句库
  1. Since Dr Manica was looking for effects other than those produced by natural selection, those things had to be eliminated.
    既然莫尼卡（Manica）要研究的是除自然选择外的影响，气候因素就要排除。
  2. Darwin accepted blending inheritance, but Fleeming Jenkin calculated that as it mixed traits, natural selection could not accumulate useful traits.
    达尔文承认混合遗传，但弗莱明•杰肯认为当性状是混合的情况下，自然选择不能积累有益性状。
  3. Haldane applied mathematical analysis to real world examples of natural selection such as the evolution of industrial melanism in peppered moths.
    S.霍尔丹发表了一系列的论文，将数学分析应用到真实世界的自然选择例子，如椒粉蛾工业黑变病的进化。

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原声例句
跟马修学英语

Natural selection is the cornerstone principle of evolution.

物竞天择说是进化论的基础原则。

科普小杂文

Natural selection rewarded our ancestors for collaboration, and for forming connections with each other.

在物竞天择中，我们的祖先互相合作，并且建立彼此的关系而存活下来。

电影预告放映室

We've created the next chapter in natural selection.

我们创造了自然选择新的篇章。

CCTV 见闻

I believe in Darwin's theory of natural selection.

我相信达尔文的自然选择理论。

TED演讲（视频版） 2018年7月合集

The one we know best is Darwinian natural selection.

其中最广为人知的理论之一就是 达尔文的自然选择论。

双语版 TED-Ed 演讲精选

To answer this question, it helps to understand natural selection.

回答了这个问题，有助于理解自然选择。

6 Minute English 六分钟英语

Dr Nesse suggests that anxiety is a result of natural selection.

内瑟博士认为焦虑是自然选择的结果。

万物简史

If natural selection were to work, some alternative, unconsidered mechanism was required.

如果自然选择要起作用的话，就得需要某种尚未发现的替代机制。

Crash Course 植物学篇

But the second force, natural selection, is definitely not random.

但第二种力量——自然选择——绝对不是随机的。

6 Minute English 六分钟英语

Well, anxiety may be a result of natural selection.

好吧，焦虑可能是自然选择的结果。

中文百科

自然选择

加拉巴哥群岛（Galápagos Islands）拥有13个雀鸟物种（Darwin's finches），他们相当亲近，主要的特征差异在于鸟喙的形状。不同种类的鸟喙皆与合适于牠们的食性。达尔文认为，这是自然选择造成的演化后果。
定向选择、平衡选择和破坏选择。横轴是性状，纵轴是个体数量。红线代表原本的性状分布，蓝色是选择后的结果。

自然选择（英语：natural selection，传统上也译为天择）指生物的遗传特征在生存竞争中，由于具有某种优势或某种劣势，因而在生存能力上产生差异，并进而导致繁殖能力的差异，使得这些特征被保存或是淘汰。自然选择则是演化的主要机制，经过自然选择而能够称成功生存，称为「适应」。自然选择是唯一可以解释生物适应环境的机制。

这个理论最早是由达尔文在1859年出版的《物种起源》中提出，其于早年在加拉巴哥群岛观察了数种动物后发现，岛上很少有与邻近大陆相似的物种，并且还演化出许多独有物种，如巨型的加拉巴哥群岛陆龟，达尔文于开始以为，岛上的燕雀科鸟类应与南美洲发现的为同种，经研究，十三种燕雀中只有一种是与其大陆近亲类似的，其余皆或多或少发生了演化现象，他们为了适应岛上的生存环境，改变了鸟喙的大小 。

英语百科

Natural selection 自然选择

Morpha typica and morpha carbonaria, morphs of the peppered moth resting on the same tree. The light-coloured morpha typica (below the bark's scar) is hard to see on this pollution-free tree, camouflaging it from predators.
Charles Darwin's illustrations of beak variation in the finches of the Galápagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. The beak of each species is suited to its preferred food, suggesting that beak shapes evolved by natural selection.
These charts depict the different types of genetic selection. On each graph, the x-axis variable is the type of phenotypic trait and the y-axis variable is the amount of organisms. Group A is the original population and Group B is the population after selection. Graph 1 shows directional selection, in which a single extreme phenotype is favored. Graph 2 depicts stabilizing selection, where the intermediate phenotype is favored over the extreme traits. Graph 3 shows disruptive selection, in which the extreme phenotypes are favored over the intermediate.

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in heritable traits of a population over time. Charles Darwin popularised the term "natural selection"; he compared it with artificial selection (selective breeding).

近义、反义、联想词
近义词
n.
natural process, natural action, action, activity

英英词典
natural selection n.
  1. a natural process resulting in the evolution of organisms best adapted to the environment

    2. synonymous： survival, survival of the fittest, selection
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更新时间：2025/6/20 3:52:43