1. There are more than 600,000 professional social workers in the country, and we all either have a bachelor's degree, a master's degree, or a PhD in Social Work. 全国有60多万专业社会工作者，并且我们都有社会工作专业的学士学位、硕士学位或博士学位。
2. Jody has a PhD in nutrition, but more important, she has personal experience. 乔迪拿到了营养学博士学位，但更重要的是，她有个人经验。
3. She was proud that her son had read thousands of books and he was awarded a PhD in literature. 她儿子读了成千上万本书，并拿到了文学博士学位，这让她感到非常骄傲。
4. In 2004, physician-scientist Mauro Zappaterra began his PhD research at Harvard Medical School. 2004年，物理学家兼科学家 Mauro Zappaterra 在哈佛医学院开始了他的博士研究。
5. De Broglie, 1924, in his PhD thesis says, if an electron has wave-like properties, this would be its wavelength. 1924年德布罗意在他的博士毕业论文中说道，如果一个电子具有类似波的性质，这就是它的波长。
