Andean people before the conquest created a philosophical and spiritual system built around the concepts of duality and transformation - light versus darkness, order versus chaos.

被征服前，安第斯山人围绕二元性和转化的概念——比如光明和黑暗，秩序和混乱——创造了一个哲学和思想体系。

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The facade is an industrialized system of flexible ceramic that covers the entire building with different drawings that are produced by various lightness and darkness inside.

建筑的立面可以说是一种灵活的陶瓷产业化系统，该系统根据室内颜色的深浅灵活采用不同的组织方式进行饰面。

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He said he was lucky the airport had a back-up system of its own generators — otherwise he would have to try to land in total darkness.

这个飞行员谈到当天他准备降落的情景。他说，幸运的是，机场自己有后备的发电设备。否则，他得设法在黑暗里降落。

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During the hours of darkness the intelligent control system prevents dazzle from the headlights of other vehicles.

ENGADGET: Audi R8 e-tron to feature digital AMOLED rear-view mirror

In the case of the Argus II, the bionic eye or more accurately, the artificial retina, will turn darkness into light through a system comprised of electronics in the eye and wearable technology which wirelessly transmits a signal to the implant in the eye that lets the patient see again.

FORBES: First Bionic Eye For US Market Awaits Approval From FDA