n. 1.警卫；警戒；看守。 2.防卫者；看守者；哨兵，卫兵，〔集合词〕警卫队；〔the G-〕 (英国等的)皇家禁卫军；【航海】护航舰。 3.防护装置；(车的)挡泥板；(枪的)保险；(刀、叉、剑等柄上的)护板。 4.(击剑、拳击等的)防护姿势，防护术。 5.〔英国〕列车员 (＝〔美国〕 conductor)； (列车上的)司门员；制动手。 6.(篮球、足球等的)卫，后卫。 短语和例子 the advance [rear] guard 前[后]卫。 life guard 救生员。 mud guard 挡泥板。 catch sb. off(his) guard 乘某人不备。 come off guard 【军事】离防，下防。 drop [lower] one's guard 丧失警惕。 get past sb.'s guard 冲破某人的防御。 guard of honour 仪仗队。 Imperial G- 警卫兵。 keep [mount, stand] guard 站岗，守卫，放哨。 keep sb. under close guard 把某人置于严密监视下。 off one's guard 疏忽，不提防。 on guard 值班，当班，提防着。 on one's guard 警戒，提防。 put [throw] sb. off his guard 使某人不提防。 put [set] sb. on (his) guard 使某人提防。 relieve [change] guard 接防站岗，换岗。 row the guard 用小船在军舰周围巡逻。 run the guard 偷过哨兵线。 stand guard over 派人看守。 stand [be,lie] on [upon] one's guard 警戒，提防。 the Life Guards 〔英国〕禁卫骑兵第一、第二团。 the Royal Horse Guards 〔英国〕禁卫骑兵第三团。 vt. 1.防守，警卫，守卫。 2.看守，监视。 3.给…加保护装置，对…进行校正检查。 4.谨慎使用(言词等)。 5.【医学】对…配用矫正剂。 短语和例子 guard a fortress 防守要塞。 guard one's reputation 维护自己的名誉。 The lunatic was carefully guarded. 对疯子严加看守。 vi. 1.防卫，警惕，预防 (against)。 2.警卫，看守。 3.(击剑时)取守势。 短语和例子 guard against disease 预防疾病。
a position on a basketball team
(American football) a position on the line of scrimmage; "guards must be good blockers"
the duty of serving as a sentry; "he was on guard that night" 同义词：guard duty, sentry duty, sentry go,
a precautionary measure warding off impending danger or damage or injury etc.; "he put an ice pack on the injury as a precaution"; "an insurance policy is a good safeguard"; "we let our guard down" 同义词：precaution, safeguard,
a device designed to prevent injury or accidents 同义词：safety, safety device,
a posture of defence in boxing or fencing; "keep your guard up"
a military unit serving to protect some place or person
the person who plays that position on a football team; "the left guard was injured on the play"
a person who keeps watch over something or someone
the person who plays the position of guard on a basketball team
watch over or shield from danger or harm; protect; "guard my possessions while I''m away" 同义词：ward,
protect against a challenge or attack; "Hold that position behind the trees!"; "Hold the bridge against the enemy''s attacks" 同义词：defend, hold,
to keep watch over; "there would be men guarding the horses"
take precautions in order to avoid some unwanted consequence; "guard against becoming too friendly with the staff"; "guard against infection"
例句与用法
1.
One cannot guard against every peril . 一个人不能够预防每一种危险。
2.
The prisoner broke away from his guards . 囚犯从看守者手中逃脱了。
3.
Will you be so good as to stand guard ? 请你站在这儿给我望望风好不好？
4.
He guarded prey to the counting-house . 他押着他的俘虏到帐房间去。
5.
He bribed his way past the guard and escaped . 他买通看守而逃之夭夭了。
6.
He escaped by passing himself off as a guard . 他冒充警卫逃走了。
7.
Armed guards escorted the criminals to prison . 武装警卫把罪犯押到监狱。
8.
The man below there are always on guard . 下面的人又总是片刻不离地守着。
9.
His anger at the guard went quickly . 他对于那个警卫的愤怒很快地消失了。
10.
He tried to escape by bribing the guard . 他企图贿赂警卫而逃走。
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