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 noun 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. Origin of back staff First recorded in 1620–30 Words nearby back staff backspin, backsplash, backsplice, backstab, back-stabbing, back staff, backstage, backstairs, backstay, backstitch, backstop Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for back staff This instrument was known also as "the back-staff" from the position of the observer with his back to the sun when using it. Life Aboard a British Privateer in the Time of Queen Anne\|Robert C. Leslie
随便看	planeload plane of incidence plane of pelvic canal plane polarization planer planer saw planer tree plane sailing planeside plane spotter plane surveying plane suture planet plane table planetarian planetarium planetary planetary nebula planetary precession planetesimal planetesimal hypothesis planet gear planetoid planetology plane tree

英语词典包含192737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。

back staff