| principle | A basic idea or rule that explains or controls how something happens or works | 定律 | Cope’s Rule is a principle of evolutionary biology. | 
    
      | proposed | Suggested for consideration or action | 提出 (tíchū) | Edward Cope proposed a principle based on his examinations. | 
    
      | examination | The act of looking at something closely and carefully | 检查 (jiǎnchá) | The scientific examination of fossils led to Cope’s observations. | 
    
      | fossils | The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock | 化石 (huàshí) | Fossils provide evidence for evolutionary theories. | 
    
      | pattern | A repeated form or design especially that is used to signify a concept | 模式 (móshì) | Cope noticed a pattern of increasing sizes within species. | 
    
      | species | A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding | 物种 (wùzhǒng) | The theory was applied to various species in the fossil record. | 
    
      | evolution | The process by which different kinds of living organisms are thought to have developed from earlier forms | 进化 (jìnhuà) | Evolution is often thought of as a process leading to larger sizes. | 
    
      | directed | Guided or managed | 指向 (zhǐxiàng) | Evolution was directed towards larger-size creatures, according to Cope. | 
    
      | fossil lineages | Chronological charts of fossils of a specific species charted over time | 化石谱系 (huàshí pǔxì) | Cope used fossil lineages to support his principle. | 
    
      | chronological charts | Diagrams showing the sequence of events over time | 时间顺序图 (shíjiān shùnxù tú) | Fossil lineages are essentially chronological charts. | 
    
      | charted | Recorded or plotted on a chart | 制图 (zhìtú) | He charted fossils of different ages. | 
    
      | notes | Observations or comments | 注意  by Joe | Cope notes a tendency toward increasing size in his studies. | 
    
      | a tendency toward | An inclination or bias towards something | 倾向 (qīngxiàng) | There was a tendency toward increasing size in many species. | 
    
      | deterrent | Something that discourages or is intended to discourage someone or something | 威慑 (wēishè) | Being bigger can be a deterrent to predators. | 
    
      | happened to be | Occurred by chance | 偶然是 (ǒurán shì) | Larger animals happened to be more fuel-efficient. | 
    
      | fuel-efficient | Using fuel in an effective way with little waste | 燃油效率高的 (rán yóu xiào lǜ gāo de) | Larger animals are more fuel-efficient than smaller ones. | 
    
      | marine | Related to the sea | 海洋的 (hǎiyáng de) | Marine animals, like whales, exhibit this size efficiency. | 
    
      | eggs | The female reproductive cell in animals and plants | 卵 (luǎn) | Larger females tend to produce more eggs. | 
    
      | passing on | Transmitting something to the next generation | 传递 (chuándì) | Larger females have a better chance of passing on their genes. | 
    
      | mounted | Organized and initiated | 发起 (fāqǐ) | A challenge to Cope’s Rule was mounted in the 1970s. | 
    
      | promoted | Supported or actively encouraged | 促进 (cùjìn) | Gould promoted an alternative theory. | 
    
      | subsequently | Later; following in time or order | 随后 (suíhòu) | This theory subsequently gained widespread acceptance. | 
    
      | gained | Acquired or increased | 获得 (huòdé) | The alternative theory gained acceptance among biologists. | 
    
      | widespread acceptance | General agreement or approval | 广泛接受 (guǎngfàn jiēshòu) | Gould’s theory received widespread acceptance. | 
    
      | set against | To be in opposition to | 反对 (fǎnduì) | Gould was set against theories suggesting a directed evolution. | 
    
      | drive | To push or propel something in a particular direction | 驱使 (qūshǐ) | Theories that evolution tends to drive towards larger sizes were challenged. | 
    
      | certain ends | Specific goals or outcomes | 特定的目标 (tèdìng de mùbiāo) | Gould opposed the idea that evolution drives towards certain ends. | 
    
      | on mind | Occupying one’s thoughts | 在意 (zàiyì) | Theories like Cope’s Rule are influenced more by what’s on the scientist’s mind. | 
    
      | regarding | Concerning; about | 关于 (guānyú) | Gould had concerns regarding the scientific method used. | 
    
      | tended to | Were inclined to or showed a likelihood of | 倾向于 (qīngxiàng yú) | Scientists tended to look at fossils in a way that supported Cope’s Rule. | 
    
      | ignoring | Paying no attention to | 忽视 (hūshì) | There’s a danger of ignoring evidence that contradicts one’s thesis. | 
    
      | contrary | Opposite in nature, direction, or meaning | 相反 (xiāngfǎn) | Evidence contrary to Cope’s Rule was often overlooked. | 
    
      | thesis | A statement or theory that is put forward as a premise to be maintained or proved | 论点 (lùndiǎn) | Gould’s thesis challenged Cope’s Rule. | 
    
      | troubled | Concerned or worried | 困扰 (kùnrǎo) | Gould was troubled by the methodological approach of Cope. | 
    
      | gaps | Missing parts or holes in a sequence or series | 缺口/ 空白 | The fossil record has many gaps, complicating analysis. | 
    
      | interpret | Explain the meaning of | 解释 (jiěshì) | Gould interpreted the gaps in the fossil record differently. | 
    
      | rather | Preferably; instead | 相当 | Gould suggested a rather different view of evolution. | 
    
      | wipes out | Eliminates or destroys completely | 消灭 (xiāomiè) | Natural disasters often wipe out large numbers of individuals. | 
    
      | individuals | Single organisms | 个体 (gètǐ) | Larger individuals are more likely to be wiped out in a disaster. | 
    
      | cut off | Stopped or terminated | 切断 (qiēduàn) | When food supply is cut off, smaller creatures survive better. | 
    
      | random | Happening by chance | 随机 (suíjī) | Gould saw evolution as a more random process than Cope did. | 
    
      | in effect | Essentially; in practice | 实际上 (shíjì shàng) | After a disaster, evolution in effect might seem directed. | 
    
      | tendency | An inclination towards a particular characteristic or type of behavior | 倾向 (qīngxiàng) | Gould suggested a tendency towards larger sizes after a disaster isn’t an evolutionary advantage. | 
    
      | simple physics | The basic principles of physics | 简单物理 (jiǎndān wùlǐ) | Simple physics explains why you won’t see an insect as large as an elephant. | 
    
      | insect | A small arthropod animal that has six legs and generally one or two pairs of wings | 昆虫 (kūnchóng) | The size of insects is limited by simple physics. | 
    
      | exoskeleton | The external skeleton that supports and protects an animal’s body, especially in arthropods such as insects and crustaceans | 外骨骼 | An insect’s exoskeleton can’t support the weight of an elephant-sized creature. |