https://online2.tingclass.net/lesson/shi0529/0008/8124/375.mp3
https://image.tingclass.net/statics/js/2012
[00:02]shortage 不足，缺少
[00:14]usage 用法，慣用法
[00:26]voltage電壓
[00:37]accountant會(huì)計(jì)人員，會(huì)計(jì)師
[00:53]adolescent 青少年; 青春期的
[01:09]amateur 業(yè)余的;業(yè)余活動(dòng)(愛好)者
[01:22]ambassador大使
[01:35]discipline 紀(jì)律，學(xué)科
[01:50]
