Centroids
(centroid 的复数) n. 质心\\n[机] 瞬心线
🗣️ 情景例句
Don't worry, Alexandra.
别担心，Alexandra。
Newspapers keep us in contact with the events of the world.
报纸是巨大的信息来源，互联网也不能取代它的地位。
Is she at school today?
她今天上学来了吗？