Sinesoid
正弦曲线
🗣️ 情景例句
you have a lunch appointment with Mr. Levine,
跟Levine先生约好吃午餐。
To have a girl friend
有女朋友
I live in a tall building in the middle of the city.What about you?
我住在这个城市中心的一幢高楼里。你呢？