Cissoid
凹边的,蔓叶线的
🗣️ 情景例句
I hear that you have a Italy Symphony Orchestra concert on the 15th evening.
听说15号晚上意大利交响乐团要在贵院演奏。
Hello, Tom, what's happening?
你好，汤姆，怎么啦？
I was at the greengrocer's.
我在蔬菜水果店里。