单词	semicentennial
释义	sem·i·cen·ten·ni·al (sĕm′ē-sĕn-tĕnē-əl, sĕm′ī-) adj. Marking the 50th anniversary of an event. n. A 50th anniversary or its celebration.
随便看	rumour rump rumple rumply rumpus rumpus room rumrunner rum shop run runabout run across run a fever run afoul of run after run against runagate run along runaround run a temperature run a temperature/fever run away runaway run away with runback run batted in

英语词典包含135693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。