line of defense

• 比喻或实际的屏障、策略或一群人，用于抵御攻击、批评或失败。常用于军事、体育或网络安全语境中。

A metaphorical or literal barrier, strategy, or group of people used to protect against attack, criticism, or failure. Often used in military, sports, or cybersecurity contexts.

1. Military positionB2formal

   A position or arrangement of troops and fortifications designed to protect against enemy attack.

   防线

   • The army established a strong line of defense along the river.
   • The enemy breached the first line of defense.
   • They fortified the second line of defense with additional troops.

2. Immune responseB2formal

   The body's system of cells and mechanisms that protect against infection and disease.

   防线

   • White blood cells form the first line of defense against infections.
   • Vaccines help strengthen the body's second line of defense.
   • The skin acts as a physical line of defense against pathogens.

3. Argument or strategyC1formal

   A set of arguments or strategies used to protect an idea, position, or decision.

   防线

   • Her first line of defense in the debate was to cite reliable sources.
   • The company's line of defense against the lawsuit was strong.
   • He prepared multiple lines of defense for his argument.