Bitonal
a. [音]雙調的
??? 情景例句
I think yours is a well-known advertising company.
我認為你們公司是一個著名的廣告公司。
It's about time.
時間差不多了。
The children were leaving school on Tuesday when they saw a truck.
星期二，孩子們正放學回家，這時，他們看見一輛卡車。