guard

• 指保护、看守或守卫某人或某物免受伤害、危险或未经授权进入的人或物。

A noun referring to a person or thing that protects, watches over, or secures someone or something from harm, danger, or unauthorized access.

1. A2formal

   A person who protects a person, place, or thing from danger or attack.

   守卫

   • The security guard checked our IDs at the entrance.
   • A prison guard monitors the inmates.
   • The palace guard stood perfectly still.

   同义词bodyguarddefenderescortguardianprotectorsecurity guardsentrywatcherwatchman

2. Protective deviceB1formal

   A device or piece of equipment designed to prevent injury or damage.

   防护装置

   • Always wear a mouth guard when playing contact sports.
   • The machine has a safety guard to protect the operator.
   • He installed a guard over the sharp blade.

   同义词barrierbufferbumperfenderprotectorsafeguardscreenshield

3. State of watchfulnessB1formal

   A state of being careful or watchful to avoid danger.

   警惕

   • The soldiers were on guard all night.
   • You should be on your guard against pickpockets.
   • He let his guard down and was surprised by the question.

   同义词alertnesscautioncircumspectionvigilancewarinesswatchfulness

• 动词，表示保护某人或某物免受伤害、危险或攻击，也指看守、监视以防止逃跑或发生意外。

A verb used to indicate the act of protecting someone or something from harm, danger, or attack.

1. Protect from harmB1formal

   To watch over and protect someone or something from danger or attack.

   保护

   • The soldiers guard the palace day and night.
   • She guards her younger brother from bullies.
   • Dogs are often used to guard property.

   同义词coverdefendprotectsafeguardsecuresheltershield

   反义词abandonendangerexposeharmneglect

2. Prevent escapeB1formal

   To keep someone or something from escaping or being accessed.

   看守

   • The police guard the prisoner during transport.
   • Security guards guard the entrance to the building.
   • They guard the treasure in a vault.

   同义词confinedetainescortrestrainsecurewatch

   反义词freeliberaterelease

3. Keep secret or safeB2informal

   To protect information or a secret from being revealed.

   保守秘密

   • He guards his personal life from the media.
   • She guards the recipe as a family secret.
   • You should guard your passwords carefully.

   同义词concealdefendkeeppreserveprotectsafeguardshield

   反义词disclosedivulgeexposeleakreveal