called an astrolabe
叫做星盘
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Mariners were also able to fix their latitude, by using an instrument called an astrolabe.
海员们还可使用星盘这种仪器确定纬度。
youdao
Mariners were also able to fix their latitude by using an instrument called astrolabe.
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