科学时代-面向大众传播科学知识、科学方法、科学精神和科学思想的科学普及平台。

科学时代收录了46211条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

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Uganda，Republic of	Ugarit	ugli	Uhland (Johann) Ludwig	Uist
Ujiji	Ujjain	Ujung Pandang	UKAEA	ukiyo-e
Ukraine	ukulele	Ulan Bator	Ulanova，Calina	Ulan Ude
Ulbricht，Walter	ulcer	Uleaborg	Ullswater	Ulm
Ulm，Battle of	ulna	Ulster	Ulster Democratic Unionist Party	Ulster Unionist Party
ultramicroscope	Ultramontanism	ultrasonics	ultraviolet radiation	Ulugh Beg
Ulyanovsk	Ulysses	Umar	Umayyads	Umbelliferae
Umberto Ⅰ	Umberto Ⅱ	umbilical cord	umbrella bird	umbrella tree
Umbria	Umm al-Oaiwan	Umtali	Umtata	Un-American Committee
Unamuno y Jugo，Miguel de	uncertainty principle	Uncle Sam	unconscious	underground railways
underwing moth	underwriting	Undset，Sigrid	undulant fever	unemployment
UNESCO	Ungaretti，Giuseppe	Ungava	ungulate	uniat churches