n.六分仪座
To navigate , they must fix their sextant on something concrete.
要行动, 就必须要立足于某个坚实的事物上.
Sextant can be used for exploration and navigation .
六分仪可用于航海和勘探中。
Other early instruments included the sextant and the astrolabe.
另外的早期仪器还有六分仪和星盘.
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