Serrasoid
鋸齒波(調制)
??? 情景例句
Just let me see the score, Ellen.
讓我去看看比數 Ellen。
I subscribed to a lot of periodicals last year.
去年我訂了許多期刊。
Mum, can we have our fish and chips outside?
媽，我們可以在戶外吃嗎？