Spherometry
球径测量术
🗣️ 情景例句
In those days, when they made quilts.
那个时代 ，人们做被罩时，
This is the schedule for tomorrow.
这是明天的日程安排。
On her way home she bought a new pen at a shop.
回家路上，她在一家商店买了一支新钢笔。