Cissoid
凹边的,蔓叶线的
🗣️ 情景例句
No, you sound different today.
没有，今天你的声音听起来不一样。
The frog in well knows nothing of the great ocean.
井底之蛙不知汪洋大海。
He usually drops in at my place on his way home.
他常常在回家的路上顺便来看看我。