相关单词近义词 sentry 卫兵, lookout 瞭望台, watch 注视, guard 看守, watchman 看守人, custodian 管理人, patrol 巡逻, lookout man 了望员, spotter 观察员, scout 童子军, picket 尖木桩临近词sentry, sentimental, Sentinelli, Sentinel tag, sentinel case, sentinel loop, sentinel hole, sentinel node, sentinel duty, sentinel pile, sentinel cell, sentinel valve 返回 sentinelled