lewis

简明释义

英[ˈluːɪs]美[ˈluːɪs]

n. 吊楔

英英释义

单词用法

同义词

反义词

例句

1.The police report exonerated Lewis from all charges of corruption.

警方的报告免除了对刘易斯贪污的所有指控。

2.Let's go ahead and draw our Lewis structure based on the rest of the rules now that we have a skeleton.

既然我们已经有了框架，那我们就根据剩下的规则，继续画路易斯结构。

3.Carl Lewis has broken the world record in the 100 metres.

卡尔·刘易斯打破了百米赛跑的世界纪录。

4.Lewis was the NFL's top defender in the 2000 season.

刘易斯是2000年赛季美国国家足球联盟的最佳防守球员。

5.The biologist Lewis Thomas wrote, "Ants are so much like human beings as to be an embarrassment."

生物学家刘易斯·托马斯写道：“蚂蚁与人类如此相似，令人尴尬。”

6.Lewis will compete in both sprints in Stuttgart.

刘易斯将参加在斯图加特举行的两项短程赛。

7.Presley, Cash, Perkins and Lewis instinctively understood Phillips's ambition and believed in it.

普雷斯利、卡什、帕金斯和刘易斯本能地理解菲利普斯的雄心壮志并对此抱有信心。

8.The 1956 picture of singers Elvis Presley, Carl Perkins, Johnny Cash and Jerry Lee Lewis jamming at a piano in Sun Studios in Memphis tells a hidden story.

1956年，歌手埃尔维斯·普雷斯利、卡尔·帕金斯、约翰尼·卡什和杰瑞·李·刘易斯在孟菲斯太阳工作室的钢琴前即兴表演的照片讲述了一个不为人知的故事。

9.The engineer used a lewis to lift the heavy beam into place.

工程师使用了一个lewis来将重梁抬到位。

10.In construction, a lewis is essential for moving large objects.

在建筑中，lewis是移动大物体的必需品。

11.He explained how a lewis works during the workshop.

他在研讨会上解释了lewis的工作原理。

12.The team decided to use a lewis for the lifting operation.

团队决定在提升操作中使用lewis。

13.A lewis can greatly reduce the effort needed in lifting tasks.

lewis可以大大减少提升任务所需的努力。

作文

In the world of science, many names stand out due to their significant contributions. One such name is Lewis, referring to Gilbert N. Lewis, an American physical chemist who is best known for his concept of electron pairs and the covalent bond. His work laid the foundation for modern chemical bonding theories. The Lewis dot structure, which depicts the arrangement of electrons around atoms, is a fundamental tool in chemistry education. It helps students visualize how atoms interact and bond with each other. Understanding the Lewis structures allows chemists to predict the behavior of molecules in various chemical reactions. Moreover, the Lewis acid-base theory introduced by Lewis expanded our understanding of chemical reactivity. Unlike the traditional Brønsted-Lowry definition, which focuses on proton transfer, the Lewis theory describes acids as electron pair acceptors and bases as electron pair donors. This broader perspective has led to numerous advancements in organic and inorganic chemistry. For instance, in catalysis, Lewis acids are often used to facilitate reactions by stabilizing charged intermediates, making them invaluable in synthetic chemistry. In addition to his scientific achievements, Lewis was also known for his teaching and mentoring. He inspired countless students to pursue careers in chemistry and related fields. His legacy lives on not only through his research but also through the generations of scientists he influenced. The impact of Lewis's work can be seen in various applications, from pharmaceuticals to materials science. For example, understanding Lewis structures is crucial in drug design, where the interaction between molecules can determine the efficacy of a treatment. Furthermore, the principles established by Lewis continue to be relevant today. In the age of advanced computational chemistry, the concepts of electron sharing and molecular geometry remain central to understanding complex biochemical processes. Researchers utilize Lewis structures to model interactions in proteins, enzymes, and other biomolecules, paving the way for innovations in biotechnology and medicine. In conclusion, the name Lewis represents more than just an individual; it symbolizes a pivotal shift in the field of chemistry. From defining chemical bonds to revolutionizing our understanding of acid-base reactions, Lewis's contributions have shaped the scientific landscape. As students and professionals continue to study and apply his theories, the relevance of Lewis in modern science remains undeniable. His work serves as a reminder of the importance of curiosity, innovation, and education in driving scientific progress.

在科学界，许多名字因其重要贡献而脱颖而出。其中一个名字是Lewis，指的是吉尔伯特·N·路易斯，一位美国物理化学家，他以电子对和共价键的概念而闻名。他的工作为现代化学键理论奠定了基础。Lewis点结构描绘了原子周围电子的排列，是化学教育中的基本工具。它帮助学生可视化原子如何相互作用和结合。理解Lewis结构使化学家能够预测分子在各种化学反应中的行为。 此外，路易斯酸碱理论的提出扩展了我们对化学反应性的理解。与传统的布朗斯特-劳里定义（侧重于质子转移）不同，Lewis理论将酸描述为电子对受体，碱则是电子对供体。这种更广泛的视角促进了有机和无机化学的众多进展。例如，在催化中，Lewis酸通常用于通过稳定带电中间体来促进反应，使其在合成化学中不可或缺。 除了他的科学成就外，Lewis还因其教学和指导而闻名。他激励了无数学生追求化学及相关领域的职业生涯。他的遗产不仅通过他的研究而延续，也通过他影响的一代又一代科学家得以延续。Lewis工作的影响可以在从制药到材料科学的各种应用中看到。例如，理解Lewis结构在药物设计中至关重要，因为分子之间的相互作用可以决定治疗的有效性。 此外，Lewis建立的原则在今天仍然相关。在先进计算化学的时代，电子共享和分子几何的概念仍然是理解复杂生化过程的核心。研究人员利用Lewis结构来建模蛋白质、酶和其他生物分子中的相互作用，为生物技术和医学的创新铺平道路。 总之，Lewis这个名字代表的不仅仅是一个个体；它象征着化学领域的重大变革。从定义化学键到革命性地改变我们对酸碱反应的理解，Lewis的贡献塑造了科学的格局。随着学生和专业人士继续研究和应用他的理论，Lewis在现代科学中的相关性仍然不可否认。他的工作提醒我们好奇心、创新和教育在推动科学进步中的重要性。