三角帽

例句：

1. 1.He wore a triangle hat to protect his face from the sun.
   他戴着一顶三角帽，以防面部受到阳光的照射。
2. 2.The teacher gave each student a triangle hat as a prize for their good behavior.
   老师给每个学生一个三角帽作为他们良好行为的一个奖励。
3. 3. The triangle hat is a popular accessory for men's fashion.
   三角帽是男性时尚中非常流行的配饰。