We tried to find the root of the noise in our classroom.
我們嘗試找出教室裡噪音的根源。
The root of their fight was a small misunderstanding.
他們吵架的原因是一個小誤會。
The roots of the problem are still unclear to us.
這個問題的根源對我們來說仍不清楚。
Lack of sleep is the root of my headaches.
睡眠不足是我頭痛的根源。