| 单词 | sextant |
| 释义 | Word Frequency sextant(ˈsɛkstənt) noun 1. an optical instrument used in navigation and consisting of a telescope through which a sighting of a heavenly body is taken, with protractors for determining its angular distance above the horizon or from another heavenly body 2. a sixth part of a circle having an arc which subtends an angle of 60° Word origin C17: from Latin sextāns one sixth of a unit |
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