1. on guard : 警惕；

2. on one's guard : 警惕；

1. The warehouse is guarded.
    库房有人看守。

2. A dog guarded his house.
    一只狗守卫着他的房子。

1. He got in under his opponent''s guard.
    虽然对手摆出防御姿势，但仍被他击中。

2. A policeman kept guard over the prisoners.
    一名警察看守囚犯。

3. 公共查询·英语单词大全

3. Be on your guard against pickpockets.
    谨防扒手。

1. 警卫：5:警戒塔 产生警卫(Guard),消除居民的不安,打击犯罪. 警戒塔不是必须的,由于它会对吸引力造成不利的影响,所以如果你的居民区建设的很好,工资和税收水平都比较合理,城市的经济状况也十分良好,社会安定,这样的情况下警戒塔其实不建更好.

2. 后卫：以NBA习惯来说,后卫(guard)是有两位,控球后卫与得分后卫,NBA会将之概括化,那是因为-NBA球员技术已达全面境界,技术、观念瞬间转变轻而易举,因此对控球后卫与得分后卫统称后卫;但个人认为,以现代业余球员其技术与观念,

3. 保护：除需要拟合准确的试验公式外,还需同时测量水与冰水混合物的电阻率,从而直接计算出蓄冰率,并且需要对保护(Guard)电极进行探讨,以获得良好的精度、稳定性和通用性的测量方法.

4. guard的解释

4. 守卫：守卫(Guard) 守卫(Guard) 顺风耳告诉你:守卫的道行已达已证大道的境界. 在四门中个站了个npc,分别是 水神(Shui shen) 雷神(Lei shen)风神(Feng shen) 火神(Huo shen) 杀了他们,就会从他们身上各掉下一至于我们中华民族的祖先轩辕黄帝站在这干什么的呢?

5. guard的近义词

5. guard：g.; 后卫

1. 守卫；护卫；警卫
    If you guard a place, person, or object, you stand near them in order to watch and protect them.

    e.g. Gunmen guarded homes near the cemetery with shotguns...
           持枪者手持猎枪守卫着墓地附近的房子。
    e.g. ...the heavily guarded courtroom.
           戒备森严的法庭

2. 看守；监视
    If you guard someone, you watch them and keep them in a particular place to stop them from escaping.

    e.g. Marines with rifles guarded them...
           手持步枪的海军陆战队士兵监视着他们。
    e.g. He is being guarded by a platoon of police.
           有一队警察看守着他。

3. 卫兵；警卫员；看守
    A guard is someone such as a soldier, police officer, or prison officer who is guarding a particular place or person.

    e.g. The prisoners overpowered their guards and locked them in a cell.
           囚犯们制服了监狱看守，并将他们锁进了牢房。

4. （一队）卫兵；（一队）警卫
    A guard is a specially organized group of people, such as soldiers or policemen, who protect or watch someone or something.

公共查询·英语单词大全

    e.g. We have a security guard around the whole area...
           我们在该地区各处部署了保安。
    e.g. A heavily armed guard of police have sealed off the city centre.
           一队全副武装的警察已经封锁了市中心。

5. 列车长
    On a train, a guard is a person whose job is to travel on the train in order to help passengers, check tickets, and make sure that the train travels safely and on time.

6. 保护；保守；遮掩
    If you guard some information or advantage that you have, you try to protect it or keep it for yourself.

公共查询·英语单词大全

    e.g. He closely guarded her identity.
           他对她的身份守口如瓶。
    e.g. ...a threat to the country''s jealously guarded unity.
           对该国珍惜维护的统一局面的威胁

7. 保护装置；保护罩；保护器
    A guard is a protective device which covers a part of someone''s body or a dangerous part of a piece of equipment.

    e.g. ...the chin guard of my helmet...
           我头盔上的下巴保护罩
    e.g. A blade guard is fitted to protect the operator.
           为保证操作人员的人身安全安装了桨叶保护罩。

8. （英国的）近卫军，禁军，近卫军士兵
    Some regiments in the British Army, or the soldiers in them, are referred to as Guards.

    e.g. ...the Grenadier Guards.
           英国近卫步兵团

9. see also: guarded;bodyguard;coastguard;lifeguard;old guard

10. 乘（人）不备；使猝不及防
      If someone catches you off guard, they surprise you by doing something you do not expect. If something catches you off guard, it surprises you by happening when you are not expecting it.

      e.g. Charm the audience and catch them off guard...
             吸引观众的注意力，然后给他们来个出其不意。
      e.g. The invitation had caught me off guard.
             收到这份邀请让我颇感意外。

11. 丧失警惕；放松警惕；不提防
      If you lower your guard ,let your guard down or drop your guard, you relax when you should be careful and alert, often with unpleasant consequences.

      e.g. The ANC could not afford to lower its guard until everything had been carried out...
             非洲人国民大会在所有事项皆已完成前不敢有丝毫松懈。
      e.g. You can''t let your guard down...
             你不能放松警惕。

12. 派人守卫；安排看守
      If you mount guard or if you mount a guard, you organize people to watch or protect a person or place.

公共查询·英语单词

      e.g. They''ve even mounted guard outside the main hotel in the capital...
             他们甚至派人在首都的大饭店外面站岗。
      e.g. Police mounted round-the-clock guards on properties last night.
             警方昨晚通宵值守财物。

13. 警惕；提防
      If you are on your guard or on guard, you are being very careful because you think a situation might become difficult or dangerous.

danci.911cha.com

      e.g. The police have questioned him thoroughly, and he''ll be on his guard...
             警方已经对他进行了详细的盘问，因此他会保持戒备心理。
      e.g. He is constantly on guard against any threat of humiliation.
             他时刻提防着任何有辱尊严之事。

14. 站岗；值班
      If someone is on guard, they are on duty and responsible for guarding a particular place or person.

      e.g. Police were on guard at Barnet town hall.
             警察在巴尼特市政厅值守。

15. 站岗；放哨
      If you stand guard, you stand near a particular person or place because you are responsible for watching or protecting them.

      e.g. One young policeman stood guard outside the locked embassy gates.
             一位年轻的警察在大门紧闭的使馆外站岗。

16. 在…看守之下
      If someone is under guard, they are being guarded.

      e.g. Three men were arrested and one was under guard in hospital.
             有3人被逮捕，1人在警方监护下送医院治疗。

相关词组：guard against

1. a position on a basketball team

2. (American football) a position on the line of scrimmage

    e.g. guards must be good blockers

3. the duty of serving as a sentry

    e.g. he was on guard that night

    Synonym: guard dutysentry dutysentry go

4. a precautionary measure warding off impending danger or damage or injury etc.

    e.g. he put an ice pack on the injury as a precaution
           an insurance policy is a good safeguard
           we let our guard down

    Synonym: precautionsafeguard

5. a device designed to prevent injury or accidents

    Synonym: safetysafety device

6. a posture of defence in boxing or fencing

    e.g. keep your guard up

7. a military unit serving to protect some place or person

8. the person who plays that position on a football team

    e.g. the left guard was injured on the play

9. a person who keeps watch over something or someone

10. the person who plays the position of guard on a basketball team

1. watch over or shield from danger or harm
    protect

    e.g. guard my possessions while I''m away

    Synonym: ward

2. protect against a challenge or attack

    e.g. Hold that position behind the trees!
           Hold the bridge against the enemy''s attacks

    Synonym: defendhold

3. to keep watch over

    e.g. there would be men guarding the horses

4. take precautions in order to avoid some unwanted consequence

    e.g. guard against becoming too friendly with the staff
           guard against infection