boil (something) down
phrasal verb with boil verb uk/bɔɪl/ us/bɔɪl/
（使）煮浓;（使）熬浓
to heat a liquid or food so that part of it is turned into gas and its amount is reduced, or to be reduced in this way
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。