Nonsinusoidal
[电] 非正弦的
🗣️ 情景例句
Where is your family from?
祖籍在哪里？
Thank you for inviting us; we had a wonderful time.
谢谢您的邀请，使我们过得很快乐。
I've been here for about two years. I've been here since 1993.
我到这儿大约有两年时间了。我自1993年就到这儿学习。