英语词汇“back staff”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	back staff
释义	back staff an obsolete instrument for determining the altitude of the sun by facing away from the sun, sighting upon the horizon, adjusting a cursor until its shadow falls upon the sight through which the horizon appears, and measuring the resulting arc. [1620-30]
随便看	reactive component reactive depression reactive schizophrenia reactivity reactor read Read readability readable readapt readaptability readaptable readaptation readaptive readd readdition readdress Reade reader readership readily readiness reading Reading reading chair

英语词典包含168451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。