Elementary geometry
初等几何（学）
🧩 词语组成解析
🗣️ 情景例句
Are you here on business or for pleasure?
你来这儿是出差还是游玩？
So he keeps on studying after his English classes in order to prepare for life in America.
所以他在英语课下课后还继续学习，为以后在美国生活做准备。
Not all sounds made by animals serve as language.
动物发出的声音不都是用作语言交际。