Octahedra
octahedron 的复数
🗣️ 情景例句
Very few people last in this class for the full hour the very first time.
很少人能够第一次撑完一个小时的课。
In Britain, there are open universities.
在英国，有成人大学。
small at first, narrowly contained within its banks,
开始很小，被紧紧地夹在两岸中间，