root

The strong roots of the old oak tree prevent soil erosion.

(Chinese) 老橡树强壮的根防止了水土流失。

Some vegetables, like carrots, are actually plant roots.

(Chinese) 有些蔬菜，如胡萝卜，实际上是植物的根。

Money is often said to be at the root of many problems.

(Chinese) 人们常说金钱是许多问题的根源。

The root of the word "international" is "nation."

(Chinese) “国际”这个词的根源是“国家”。