limb of the law
 法律的爪牙,執法人員


 Limb n.
 1. A part of a tree which extends from the trunk and separates into branches and twigs; a large branch.
 2. An arm or a leg of a human being; a leg, arm, or wing of an animal.
 A second Hector for his grim aspect,
 And large proportion of his strong-knit limbs.   --Shak.
 3. A thing or person regarded as a part or member of, or attachment to, something else.
    That little limb of the devil has cheated the gallows.   --Sir W. Scott.
 4. An elementary piece of the mechanism of a lock.
 Limb of the law, a lawyer or an officer of the law. [Colloq.]  --Landor.