- watch over to keep safe守卫; 保卫：
they were sent to guard villagers from attack by bandits.
他们被派去保护村民免受土匪袭击。
- watch over in order to control entry and exit警卫, 把守：
the gates were guarded by uniformed soldiers.
大门由穿军装的战士把守。
- watch over (someone) to prevent them from escaping看守, 监视：
police officers were guarding inmates who cannot be accommodated in prison.
警官们正在看守那些监狱容纳不下的犯人。
- no obj.
guard against
take precautions against警惕; 防范： farmers must guard against sudden changes in the market.
农民必须警惕市场的突变。
- protect against damage or harm保护, 维护：
the company fiercely guarded its independence.
公司奋力维护自己的独立。
- Basketball stay close to (an opponent) in order to prevent them getting or passing the ball【篮球】防（对手）。
- a person who keeps watch, especially a soldier or other person formally assigned to protect a person or to control access to a place警卫员; 卫兵; 看守：
a security guard
一个安全警卫
as modifier he distracted the soldier on guard duty.他使站岗的哨兵分散了注意力。
- treated as sing. or pl. a body of soldiers serving to protect a place or person一队警卫（或卫兵、看守）：
the hound belonged to a member of the castle's guard.
这条猎狗是城堡警卫队的一名队员的。
Guards
the household troops of the British army（英国）禁卫军。
- N. Amer. a prison warder〈北美〉监狱看守。
- Irish a member of the Irish police force; a Garda〈爱尔兰〉爱尔兰警察; 卫兵。
- Brit. an official who rides on and is in general charge of a train〈英〉列车长。
- American Football each of two players either side of the centre【美橄】后卫。
- Basketball each of two players chiefly responsible for marking opposing players【篮球】后卫。
- a device worn or fitted to prevent injury or damage防护装置, 保护罩; 防护用品：
a retractable blade guard.
能伸缩的刀片护罩。
- a defensive posture that is adopted in a boxing or martial arts contest or in a fight（拳击、武术比赛或打斗中的）防御姿势：
this kick can curl around an otherwise effective guard.
这种踢法可以绕过原本有效的防御姿势。
- a state of caution, vigilance, or preparedness against adverse circumstances警惕, 戒备, 防备：
he let his guard slip enough to make some unwise comments.
他放松了戒备, 所以做出一些不明智的评论。
guard of honour
- a group of soldiers ceremonially welcoming an important visitor仪仗队。
keep（或stand）guard
- act as a guard站岗, 放哨。
off guard
- unprepared for some surprise or difficulty猝不及防, 丧失警惕：
the government was caught off guard by the unexpected announcement.
政府被这突如其来的声明弄得措手不及。
on guard
- on duty to protect or defend something站岗, 放哨; 值班。
- （亦作on one's guard）prepared for any contingency; vigilant警惕, 提防; 警戒：
we must be on guard against such temptation.
我们应警惕这种诱惑。
raise one's guard
- adopt a defensive posture摆出防御姿势。
take guard
- Cricket (of a batsman) stand in position ready to receive the ball, especially having asked the umpire to check the position of one's bat with respect to the stumps【板球】（击球员）站到正确的击球位置。
under guard
- being guarded在看守下, 在警卫下：
he was held in an empty stable under guard.
他被关在一个有警卫看守的空马厩里。