guard against

柯林斯词典

guard against (guarding,guarded,guards)

• 1. PHRASAL VERB If you guard against something, you are careful to prevent it from happening, or to avoid being affected by it. 提防

  The armed forces were on high alert to guard against any retaliation. 武裝部隊保持高度警惕，以防發生任何報複行爲。

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