| 单词 | astrolabe |
| 释义 | Word Frequency astrolabe(ˈæstrəˌleɪb) noun an instrument used by early astronomers to measure the altitude of stars and planets and also as a navigational aid. It consists of a graduated circular disc with a movable sighting device Compare sextant Word origin C13: via Old French and Medieval Latin from Greek, from astrolabos (adj), literally: star-taking, from astron star + lambanein to take |
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