In teenagers, it seems that this process starts in the back of the brain and moves forward, so that the prefrontal cortex, that vital center of control, is the last to be trimmed.

对青少年而言，这个过程似乎从大脑后部开始，再移向前端。因此，至关重要的控制中心——前额叶皮层——就成了最后才被涉及的区域。

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For patients with metastatic melanoma, like those in the Jonsson Cancer Center study, there are few effective treatments, so it's vital to come up with alternative therapies, Lo said.

对于黑素瘤转移病人来说，就像在琼森癌症中心的研究中的一样，有效药物少之又少。 因此，加紧研究替代性治疗方法是至关重要的。

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The Village Center at Dameisha is a coming together of people and their environment in a vital street where the local community can meet, shop, play, relax and be entertained.

大梅沙社区中心是一个人们可以聚集的充满活力的街道，当地的社区民众能够会面、购物、游玩、休息和娱乐的场所。

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Raines' own experiences as a protester five months earlier may have provided his first taste of how inhospitable the "vital center" can be.

CNN: AllPolitics - TIME This Week

If CDER is allowed to re-write the history of Avandia, this vital FDA Center will continue to function as an unsupervised, self-regulating bureaucracy, accountable to no one.

FORBES: Steven Nissen: The Hidden Agenda Behind The FDA's New Avandia Hearings

Some 20% of cognitively healthy older adults have been found during autopsies to have large quantities of amyloid in the brain, according to Denise Park, director of the Center for Vital Longevity at the University of Texas at Dallas.

WSJ: FDA Approves Alzheimer's Test Developed by Eli Lilly