定义
the roots: 起源，核心，本质
the root of a problem 问题的根源
The square root of 4 is 2. 4的平方根是2.
Pronunciation examples
UK: Overspending is the root of your financial problems.
US: I'm researching my family tree because I want to trace my roots.
- "Get back to ya roots, man."
- "Remember Delavigne's French roots and luxury appeal!"
- "He expressed discontent over Mr. Delavigne's French roots, claiming that the French support rogue states and "non-freedom"."
- "The building is a subtle and humorous allusion to our French roots, and also portrays the company as one that moves forward at a steady pace."
- "Rugby fan : I can't put my finger on it exactly, but the sport itself remains loyal to its gentlemanly roots."
