Americans often try to say things as quickly as possible. So, for some expressions, we use the first letters of the words instead of saying each word. Many common expressions or long names are shortened this way.
B-Y-O-B is a short way of saying, "Bring Your Own Bottle."
The letters BYOB are often found at the bottom of a written invitation to a simple social event or gathering of friends. For example, let's say I had a New Year's Eve party. I might include on the invitation, "Please come to my party and BYOB." The bottle each person brings is what the person wants to drink at the party or wants to share.
However, an invitation to a special event – such as a wedding --would never say BYOB.
An invitation to an official or very special event often has other letters written at the bottom. The letters are R-S-V-P.
These letters represent the French expression, "Repondez S'il Vous Plait." In English the words mean, "Respond If It Pleases You." Americans use the letters as a short way to say, "Please answer this invitation."
这些字母代表的是法语中的Repondez S'il Vous Plait。用英语来说意思就是敬请回复。美国人用这些字母简短地表示出“请回复这个请柬”。
Another expression usually used for business and not parties is A-S-A-P. So, a colleague might say she needs something done ASAP. It means as soon as possible. She might also need something done by C-O-B. That means she wants to finish it by "Close Of Business" or the end of the work day.
另一种通常用于商务活动而不是聚会的表达是ASAP。那么，同事可能会说她需要尽快（ASAP）完成某件事。它的意思就是就是尽可能地快（as soon as possible）。她可能需要在下班（COB）前完成某些工作。COB是Close Of Business的缩写，意思是停止营业或下班。
Beginning letters are often used to represent the names of universities.
A famous one is MIT. That is short for the Massachusetts Institute of Technology. Another major university is UCLA. Almost no one ever says its real name, the University of California at Los Angeles. That takes way too long!
Many American government agencies are also known by their beginning letters. For example, the F-B-I is the Federal Bureau of Investigation. The FBI investigates criminal activity in the United States. Then there is the I-R-S, the Internal Revenue Service. It is not a very popular agency because it collects federal taxes.
Words in This Story：
party – n. a social event in which entertainment, food, and drinks are provided
colleague – n. fellow worker or professional