degrade

v. /dɪˈɡreɪd/ C1

降低；退化；分解

To reduce quality, spoil, or break down chemically.

仙境例句

Heavy rain degraded the croquet-ground until it was nothing but mud and holes.

一场大雨把槌球场毁得不成样子，只剩下烂泥和坑洞。