https://online2.tingclass.net/lesson/shi0529/0009/9870/135.mp3
https://image.tingclass.net/statics/js/2012
Smith: How much can I change 100 dollars for?
史密斯：100美元可以兌換多少錢?
Clerk: What kind of currency do you want?
職員：要哪種貨幣?
Smith: how much will it be in Chinese currency?
史密斯：換人民幣多少錢?
Clerk: That’s 680 Yuan.
職員：680元
