Boil down...
熬浓..., (喻)压缩...
🧩 词语组成解析
boil
[bɔɪl]
n. 煮沸，沸腾;疔，疖子;[医]疡肿，脓肿;
vt.& vi. （使）沸腾，开;
vt. 用开水煮，在沸水中煮;
vi. 怒火中烧，异常气愤;
🗣️ 情景例句
There is a lot of unsavory material available on the internet.
网络上有很多不健康的信息。
The snow will soon be deep enough to ski on.
雪将会很快就积到可以滑的深度了。
not to mention the equally numerous small animals like field mice and voles which you do not see,
地上有不显眼的无数的老鼠和田鼠之类的小动物，