Cissoid
凹边的,蔓叶线的
🗣️ 情景例句
I heard you cheated on your exams.
我听说你考试作弊了。
Is it raining now?
现在正在下雨吗？
Please write soon and tell me all your news.
噢，我得停笔了。请快点回信，告诉我你们的一切。