单词	Fresnel lens
释义	Fresnel lens noun Fres·​nel lens ˈfrez-nəl-  frā-ˈnel-  : a lens that has a surface consisting of a concentric series of simple lens sections so that a thin lens with a short focal length and large diameter is possible and that is used especially for spotlights Word History Etymology Augustin J. Fresnel First Known Use 1865, in the meaning defined above
随便看	dewy-eyed dex DEXA dexamethasone dexamethasones dexamphetamine Dexedrine dexedrines dexes dexfenfluramine dexies dexiid Dexiidae dexiotropic dexiotropous dexter dexter base point dexter chief point dexterer dexterest dexterities dexterity dexterous dexterously dexterousness

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。