She's drawing the line at this particular action – eating " spoiled" (spoiled) meat.

她在这个特定的动作上划清界限——吃“变质”（spoiled）的肉。

If everybody starts identifying themselves as having ADHD, you know, if like 10% becomes 20%, becomes 30 becomes 50, becomes 60%, then really what is the disorder that we're talking about here where are we drawing the line.

如果每个人都开始认定自己有多动症，你知道的，如果像10%变成20%，变成30%，变成50%，变成60%，那么真正的障碍是什么，我们谈论的是我们该在哪里划定患多动症的界限。

169.A clever reader treats reading as making a dialogue with writers, inquires about their writing intention and cultivates a habit of drawing the lines under the key points and taking some notes in the margin.

一名聪明的阅读者把阅读看作是和作者的交流，询问他们写作目的，而且会养成在关键处划线，在空白处做笔记的习惯。