astrolabe
/ˈæs.tɹəˌleɪb/
C1 · Advanced★☆☆☆☆
Simple Meaning
水手用来通过观察星星确定位置的古老工具。
When to Use
📚Academic Writing⚙️Technical
Advanced — complex ideas, academic/professional
Examples in Conversation
“博物馆里有一个16世纪的漂亮星盘。”
“在GPS出现之前，水手在夜间使用星盘导航。”
Learning Path
▶Full Definition
An astronomical and navigational instrument for gauging the altitude of the Sun and stars.