guard: [ɡɑːd]
n. 警卫;保护;保卫;看守;警卫员;(统称)卫兵;警戒;禁军,御林军,近卫军;防护罩;防御姿势;后卫;﹙中锋两侧的﹚哨锋
vt. 警卫;守卫;保卫;看守;监视
第三人称单数: guards 复数: guards
现在分词: guarding 过去式: guarded
过去分词: guarded
例句:1.A guard was posted outside the building.
建筑物外设了一名警卫。
2.He was caught trying to impersonate a security guard.
他假扮警卫被抓获。
3.You can't get in; the whole place is guarded.
你进不去,整个地区都戒备森严。