These should be the area of concentration for researchers to locate and protect those regions as a way to sustain coral reefs.

这些区域是研究人员应该定位并保护的中心区域，这是维持珊瑚礁群的一种方法。

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It is a difficult problem to demolish large building bases by controlled blasting techniques within a narrow area of concentration plant.

在选矿车间的狭小范围内，用控爆技术拆除大型构筑物的基础是一大难题。

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In practice in Tokyo, because of the relative concentration of schools, there is some competition to get into the "better" school in a particular area.

在东京的惯例中，由于学校相对集中，在某个特定地区进入“更好”的学校存在一些竞争。

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New handsets are another area of concentration.

FORBES: Motorola Reorganizes Unit Before Earnings

Meanwhile, in Australia, another area of fund concentration, stocks are mired in a 14-month-long slump as Chinese demand decelerates.

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It is the process of moving water from an area with a low concentration of dissolved material, such as salt, to a place with a high concentration, by passing through a membrane.

FORBES: Getting Power From Salty Water