a hard line 强硬路线；
out of line 不成一直线；不一致；出格；
bottom line 底线；
along the same line 沿着同样的路线
Don\'t give me that line about having to work late again.
别再跟我说不得不工作到很晚这样的话。
Rule a line at the end of every piece of work.
在每一篇作品的末尾画一条直线。
I can only remember the first two lines of that song.
我只记得那首歌的头两句歌词。
