It's all about lines. 一切都有关"线"

7. To make friends.
   交朋友也是
8. You need boundaries between you and the rest of the world.
   你需要分界线让自己远离尘世
9. Other people are far too messy.
   其他人太过于复杂
10. It's all about lines.
    一切都有关"线"
11. Drawing lines in the sand
    在沙上画几条线
12. And praying like hell no one crosses them.
    拼命地祈祷没人能穿越它们
13. Look, I'm sure you're very nice,
    我相信你人很好

来自《实习医生格蕾 第一季 第二集 Grey's Anatomy S01E02》第 10 行