Serrasoid
锯齿波(调制)
🗣️ 情景例句
Away from the telephones and account books.
远离电话和帐簿。
Lovers live by love, as larks live by leeks.
情侣靠爱情生活，正像云雀靠韭葱生活一样。
Platform Two.Over the bridge.
2号站台。过天桥。