音标：[gɑ:d]
n. 守卫者, 警戒, 护卫队, 防护装置
vt. 保卫, 看守, 当心
vi. 防止, 警惕, 警卫, 看守
【化】 护罩
【医】 防卫
相关词组:
go on guard
on one's guard
off one's guard
catch sb off guard
on guard
在线英汉词典

guard的短语、例句：

guard n 1 [U] state of watchfulness against attack, danger or surprise 警戒; 看守; 守望
a soldier, sentry, etc on guard, ie at his post, on duty 担任警戒的士兵、 哨兵等
The escaped prisoner was brought back under (close) guard, ie (closely) guarded. 在严密的戒备下将逃犯押回.
policemen keeping guard outside the building 在建筑物外面守备的警察
[attrib 作定语] guard duty 警卫任务
a guard dog, ie kept to guard a building, etc 警卫犬. 2 [U] position of readiness to defend oneself, eg in boxing, fencing, bayonet-drill 防御姿势（如在拳击、 剑术、 劈刺中）
drop/keep up one´s guard 未作出[保持]防御姿势
(fig 比喻) an awkward question which got through/penetrated the minister´s guard 突破部长防范的尴尬问题. 3 [C] (a) person (esp a soldier or policeman) who watches over sb or sth 警卫（尤指士兵、 警察）
The prisoner slipped past the guards on the gate and escaped. 犯人从大门口的警卫身旁溜过逃走了.
a se`curity guard, ie one responsible for protecting property, a building, its grounds, etc against entry by intruders, burglars, etc 守卫者
`border guards 边防战士. (b) (esp US) (Brit warder) person who watches over prisoners in gaol 监狱看守. 4 (a) the guard [Gp] group of soldiers who protect buildings, etc 警卫队
the changing of the guard, ie replacing of one such group by another, eg at Buckingham Palace 换岗（如白金汉宫之更换警卫）
The guard are being inspected today. 警卫队今天要接受检阅.
double the guard (in an emergency), ie have twice the usual number of sentries on duty 派双岗（在紧急情况下派两倍於平时数目的哨兵上岗）. (b) [CGp] body of soldiers with the duty of protecting, honouring or escorting sb 卫士队; 仪仗队
On his arrival the president inspected the guard of honour. 总统抵达时, 检阅了仪仗队. 5 the Guards [pl] (in Britain and some other countries) regiments whose original duty was to protect the sovereign （英国和某些国家的）禁卫军; 警卫部队
the Royal `Horse Guards 禁卫骑兵队
[attrib 作定语] a Guards officer 禁卫队军官. 6 [C] (Brit) person in charge of a railway train 列车长. 7 [C] (esp in compounds 尤用以构成复合词) (part of an) article or apparatus designed to prevent injury or loss 保护器; 防护罩; 防卫物
Ensure the guard is in place before operating the machine. 将防护罩确实放好後再开机器.
a `fire-guard, ie in front of a fireplace
a `mudguard, ie over the wheel of a bicycle, etc. 8 (idm 习语) mount guard => mount. off/on one´s `guard unprepared/prepared for an attack, a surprise or a mistake 失去[保持]警惕
be on one´s guard against saying the wrong thing 提防说错话
put sb on his guard 使某人提防
The lawyer´s seemingly innocent question caught the witness off his guard. 那个律师提出的似乎无关痛痒的问题, 把证人问得措手不及. stand `guard (over sb/sth) act as a sentry 站岗; 守卫
Four soldiers stood guard over the coffin. 四个士兵守卫灵柩.