Geometrics
[计] 几何学图形
🗣️ 情景例句
Take care, and have a nice flight.
请保重！祝你一路顺风！
Where are you going this afternoon?
今天下午你哪里去了？
Fortunately, however, ancient men made tools of stone, especially flint,
然而， 幸运的是，远古人用石头制作了工具，特别是用燧石，