每日一词根DENS

DENS comes from Latin word densus "thick, crowded; cloudy", perhaps from PIE root *dens-"thick, dense".

DENS思维导图

 dense [dɛns] adj. 稠密的；浓厚的；愚钝的 <CET4 TEM4>

[拆] dens+e --> 稠密的

● COLLINS

adj something that is dense contains a lot of things or people in a small area. 稠密的; adj dense fog or smoke is difficult to see through because it is very heavy and dark. (烟、雾等) 浓重的; adj in science, a dense substance is very heavy in relation to its volume. (物质) 密度大的 [技术]

● 拓展:

denseness ['dɛnsnɪs] 密集；稠密；浓厚

densely 浓密地；密集地

● e.g.

Where bucharest now stands, there once was a large, dense forest. 现在的布加勒斯特所在地曾经是一片茂密的大森林

density ['dɛnsəti] n. 密度

[拆] dens(thick)+ity(n后缀) --> 表厚度 --> 密度

● COLLINS

n-var density is the extent to which something is filled or covered with people or things. 密度; n-var in science, the density of a substance or object is the relation of its mass or weight to its volume. 密度 [技术]

● 拓展

high density 高密度，密度高

power density 功率密度；谱线密度；力密度

● e.g. 

The region has a very high population density. 这一地区人口密度很高

condense [kən'dɛns] vi. 浓缩；凝结 vt. 使浓缩；使压缩 <CET4 TEM4>

[拆] con(intensive)+dens(make thick)[densare: make thick]+e --> 强调使变厚 --> 浓缩

● COLLINS

v-t if you condense something, especially a piece of writing or a speech, you make it shorter, usually by including only the most important parts. 简缩 (尤指文章、演讲稿); v-t/v-i when a gas or vapour condenses, or is condensed, it changes into a liquid. (气体、蒸汽) 冷凝

● 拓展:

condensate [kən'dɛnset] 浓缩的; 冷凝物；浓缩物

condensation [ˌkɑndɛnˈseɪʃ(ə)n] 冷凝；凝结；压缩

condenser [kən'dɛnsɚ] n 冷凝器; 聚光器, 聚光镜; 电容器

● e.g.

When you summarize, you condense an extended idea or argument into a sentence or more in your own words. 总结的时候，用自己的话把拓展了的观念或论据简缩成一句或几句话

Water vapour condenses to form clouds. 水蒸汽冷凝形成云

每日 · 一句

Behind the clouds is the sun still shining.

乌云后面的太阳依然辉煌灿烂。

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