详细解释:n. 哨兵, 标记
vt. 警戒, 守卫
【计】 标记
相关词组:
stand sentinel
词型变化：
动词过去式:sentineled,sentinelled过去分词:sentineled,sentinelled现在分词:sentineling,sentinelling第三人称单数:sentinels,sentinels英语解释：
名词 sentinel:
a person employed to watch for something to happen同义词：lookout, lookout man, sentry, watch, spotter, scout, picket