1 the bottom line the most important thing to consider when you are discussing or deciding sth, etc 基本情况（讨论或做决定时要考虑的最重要的事）；要点: A musical instrument should look and feel good, but the bottom line is how it sounds. 乐器应当外观和手感都不错，但最重要的是它的声音好不好。

2 the final profit or loss that a company has made in a particular period of time 账本底线；盈亏一览结算线

3 the lowest price that sb will accept for sth （能接受的）最低价格