to run deep
01
根深い, 深く根づいている
(of a feeling, problem, or belief) to be really strong or troublesome due to having existed for a long time
慣用句
くだけた
例
The scars of war run deep in the hearts of the survivors, who still bear the physical and emotional wounds of conflict.
何十年も放置されてきたため、その町の不満は根深い。
