From this point of view these flat Spaces around us turn out to be one possible source of dark energy for the accelerating expansion of the Universe.

从这个角度看，我们周围的这些平面空间可能是暗能量的一个来源，而正是它让宇宙加速膨胀。

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They turn around and spread their arms to point to emergency exits.

他们还在舞蹈中统一转身，指向飞机上几个紧急出口的位置。

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The company says the use of lidar can reduce the error margin by several percentage points, which in turn increases a project’s internal rate of return by around one percentage point.

这个公司说，激光的应用可以使误差范围减少几个百分点，通过附近的一个百分点，依次增加项目的内在收益率。

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Ministers are now giving schools just one year to turn around or face being closed or replaced - a point they highlighted in commenting on the annual report from the inspectorate, Ofsted, which showed 13% of secondary schools inspected last year were judged inadequate.

BBC: NEWS | UK | Education | Long road out of special measures