boil down ...

• 熬浓 ...； (喻)压缩 ...

boil down ...的用法和样例：

例句

1. Boil down the passage to about two hundred words.
   把这段文字压缩到二百字左右。
2. You'd better cut the story down one third.
   你最好把这篇故事压缩三分这一。