Bisecant
二度割线
🗣️ 情景例句
No, thank you.
不用 谢谢你。
He that would the daughter win,must with the mother first begin.
要想赢得女儿的欢心，必须先从她母亲着手。
What will be the population of these countries by the end of the twentieth century?
到20世界末较发达国家的人口将是多少？