remnant ---- 残余（名词）
英文释义
(noun) Something which remains when other similar parts are used, consumed, or no longer exist.
A few broken towers and an old stone gateway are today's only remnants of the ancient city's great protective walls.
今天，这座古城雄伟的护城墙只剩下了几座破败的望楼和一扇旧石门。