Waveshape
[電] 波形式
??? 情景例句
There's coffee ready.
咖啡準備好了。
We are anxious to know how long it will take you to deliver the goods.
我們急于知道貴方多長時間能交貨。
He say he'll write a letter soon. He hopes we are all Well.
他說他很快會寫信的。他祝我們大家身體好。