be at the bottom of something idiom
是…的根源;是…的本质
to be the real reason for or the cause of something
The desire for money is at the bottom of much of the world's violence. 对金钱的欲望是世界上许多暴力的根源。
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。