学位证书的英文表达是 "degree certificate."

学位证书是由高等教育机构（如大学）颁发的证明学生已经成功完成一个学位课程并获得学位的文件。

一些英文例句及其中文翻译如下：

"I received my degree certificate in computer science from the University of Cambridge."
我在剑桥大学获得了计算机科学学位证书。

"The degree certificate is a proof of your academic achievements and can be used to apply for jobs."
学位证书是你学术成就的证明，可用于申请工作。

"Please present your degree certificate when you come for the job interview."
请在面试时出示您的学位证书。