The BISAC system is maintained by the book Industry Study Group, which classifies books into 52 broad categories, each with additional levels of specificity.

BISAC分类体系是由图书工业研究小组(Book Industry Study Group)维护的，它把图书分为52大类，每一类下面又有进一步的细分。

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Men in the Copenhagen study maintained a stable body weight over the two week period — but they were specifically instructed to attempt to do so.

在哥本哈根研究中，男人们在两个星期多内保持了稳定的体重——但他们是被特别指示尝试这样做的。

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A 15-year study found that middle-aged women who walked for at least an hour a day maintained their weight over the decades.

一项为期15年德研究发现，每天至少步行一小时的中年妇女在过去十年中保持了她们的体重。

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And what he found was the students who were labeled-- randomly so, but who were labeled-- "fast spurters", their IQ increased significantly over the year and maintained that increase in a longitudinal study.

他发现被标签为-,被随机地标签为“快速迸发“的学生-,智商在一年间有很大增加,而且在长期研究中保持着增加。

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Better management, the study maintained, could save tens of billions of dollars in America alone.

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The mortality benefit observed during the treatment phase of the study was maintained.

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This study incorrectly maintained that there are no prospective military missions for the NASP.

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