The Ph. D. candidate is likely to change his field of specialization if he drops out.
如果这位博士候选人退出，这很可能会改变他的专业领域。
2
Research by Daniel Willingham, Ph. D. , a psychology professor at the University of Virginia, showed that repetition increases the probability of success.
弗吉尼亚大学的心理学教授丹尼尔·威灵汉博士的研究显示重复增加了成功的可能性。
3
I intended to get a Ph. D. and teach at a small college someplace, but I decided research was a lot more fun.