周三发表在《神经病学》杂志上的一项研究表明，需要大量分析思维、计划和其他管理技能的挑战性工作可能有助于你年纪渐长时保持大脑敏锐。

Challenging work that requires lots of analytical thinking, planning and other managerial skills might help your brain stay sharp as you age, a study published on Wednesday in the journal Neurology suggests.

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通过慎重计划和开展的流行病学研究，可获得关于癌症在人群中分布情况的科学依据。

Scientific evidence on the distribution of cancer in the population can be obtained through carefully planned and executed epidemiological studies.

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从生物学到音乐学，许多构想都影响着来年的研究计划。

Many of the ideas, from biology to musicology, influenced the subsequent year's research programme.

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That didn't happen to me -- once I got into the lab, I didn't want to leave. So, I thought, "You know what, I think I'll change the medical school plans and now I'm going to go all the way -- chemistry major, chemistry grad school."

这很好，但我不是这样，我一进入到实验室就不想离开了，所以我想“你知道吗,我想把我学习医学的计划改成化学-,我要学化学专业，读化学研究生“

麻省理工公开课 - 化学原理课程节选