In this paper, we propose a novel feature selection method based on concept extraction and shielded level.

本文提出了一种新的基于概念抽取和屏蔽层的特征选择方法。

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On an individual level, people can help reduce much sky glow by using lighting only when necessary and by choosing well shielded lighting fixtures.

就个人而言，仅在必要时使用照明，且选择遮光性能好的照明设备，就能有助于大幅减少人工白昼现象。

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The sunlight here deserves some respect, too; its power is shielded due to the site’s position so far below sea level.

这里的太阳光同样值得尊重，因为死海的位置远低于海平面（死海湖面低于海平面407米），所以伟大的太阳神在这里隐藏了自己的能量。

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Although the bankruptcy code is written at the federal level, individual states set the type and value of the assets that may be shielded from creditors.

ECONOMIST: Economics focus