lifeblood
noun [ U ] uk/ˈlaɪf.blʌd/ us/ˈlaɪf.blʌd/
命脉，生命线
the thing that is most important to the continuing success and existence of something else
Tourism is the lifeblood of Hawaii's economy. 旅游业是夏威夷的经济命脉。
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。