mortarboard
柯林斯词典
1. N-COUNT A mortarboard is a stiff, black cap which has a flat, square top with a bunch of threads attached to it. In the United States, mortarboards are worn by students at graduation ceremonies at high schools, colleges, and universities. 学位帽
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mortarboard (mortarboards)
剑桥词典
- a black hat with a square , flat top , worn for formal occasions and ceremonies by some teachers and students at a college or university , and in the past by some schoolteachers
（黑色的）方顶帽，学位帽 返回 mortarboard