蜜芽传媒 Learning English - 蜜芽传媒 Media English《媒体英语》: Shipwreck finds earliest astrolabe 沉船中发现世上最早航海星盘 - 蜜芽传媒 Sounds

蜜芽传媒 Learning English - 蜜芽传媒 Media English《媒体英语》: Shipwreck finds earliest astrolabe 沉船中发现世上最早航海星盘 - 蜜芽传媒 Sounds
蜜芽传媒 Media English《媒体英语》: Shipwreck finds earliest astrolabe 沉船中发现世上最早航海星盘
The earliest astrolabe - a type of navigational tool - has been found