insignia

n.

证章，官职的标志（如肩章、领章等）；

复数：insignias

1. His uniform bore the insignia of a captain.
   他的制服上有上尉徽章。
2. All officers wear grade insignia on the left side of garrison caps.
   所有的军官都在军便帽的左边戴上阶级徽章。
3. His mother pinned the insignia carefully on her son's chest.
   母亲认真地将勋章别在儿子的胸前。
4. The plane has no insignia on it.
   这架飞机不带任何徽记。

Presidential Insignia
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REFLECTION MECHANISM FOR ILLUMINATING INSIGNIA ON A COMPUTER SYSTEM
Improving UDP and TCP performance in mobile ad hoc networks with INSIGNIA
Intellectual Property Protection of Olympic Insignia:An International and Comparative Perspective