1：COB - close of business 工作日结束时间
例：The deadline of this project is COB this Friday.
2：COD - cash on delivery 货到付款
3：N/A - not applicable 不适用 （"/"读成forwad slash）
4：BTW - by the way 顺便说一句
5：FYI - for your information 跟你说一下
6：ASAP - as soon as possible 越快越好
7：TBD - to be determined 还没决定
例：Hold on on that issue. Tthat's TBD.
8：APR - Annual percentage rate 年利率
例：What's the APR on your credit card? 23%
9：KPI - key performance indicator 关键绩效指标
10：SOP - standard operation precedure 标准操作规程
11：HQ - headquarter 公司总部
12：ETA - estimated time of arrival 预计到达时间
例：What's the ETA on the new shipment?
13：YTD - year to date 从开年到今日
14：EOM - end of message 信息结束 （经常用于邮件主题）
15：FWIW - for what it's worth 再说一句
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