Sinuidal
正弦波; 正弦形
🗣️ 情景例句
That's just what I think.
那正是我所想的。
How about Mary? How long has she lived there?
玛丽怎么样？她在那儿住多久了？
He asked me if he could go steady with me?
他问，能不能继续和我约会。