●by the ˈway ( by the ˈby/ˈbyeless frequent) (spoken) 1.used for introducing sth you have just thought of, which may or may not be connected to what has just been said顺便提一下；捎带说一声；附带问一句◆I had a meeting with Graham at work today… by the way, I’ve invited him and his wife to lunch on Sunday.今天上班时，我与格雷厄姆会面了…顺便提一下，我已经邀请他和他夫人周日吃午餐。2.used for saying that sth is not important in the present situation or discussion（用于引入次要话题）并不重要◆Her academic qualifications are by the by. What we need is someone dynamic and creative.她的学术资历倒是次要的，我们需要一个有活力、有创造力的人。