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。

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Dr. Pimsleur, a Ph. D. and specialist in the field of applied linguistics, devoted his life and career to learning languages and understanding the psychology of language acquisition.

皮姆斯勒博士，一个博士和应用语言学领域的专家将毕生都贡献给学习语言，研究学习语言的心理。

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I need to have a vector field that is defined and differentiable — — everywhere in d, so same instructions as usual.

我需要一个确定的向量场，而且它在，D，上是处处可微的，然后和平时一样的做法。

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Her family thinks her free-spirited nature may be the reason she walked through a field popular with transients -- a field she'd been warned to stay away from and where her body was found February 22.

CNN: Sex offender kills teen while under GPS monitoring, police say

In fact, as reported on 9 September 1993 in a Center for Security Policy Decision Brief entitled Lifting Embargo Under Present Circumstances Will Produce New Vietnam Quagmire for Clinton (No. 93-D 76), the most experienced field investigators are effectively being taken off the case through reassignment to Hawaii -- or, as in the case of the most senior and experienced investigator, Garnett "Bill" Bell, through forced early retirement.

CENTERFORSECURITYPOLICY: Center For Security Policy

The New York-based MakerBot has emerged as a pioneer in the burgeoning field by making home 3-D printing relatively affordable.

CNN: Startup unveils 3-D scanner at SXSW