Transparent objects, such as glass, air and water, allow light to pass through.

透明物，例如玻璃，空气和水，能使光穿透。

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At the centre of the house, the white metal staircase is perforated to allow light to pass through.

在房子的中心，白色的金属楼梯被设计成为穿孔的，允许光线穿过。

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The top layer of mirrors is designed to allow a small amount of ambient light to pass through it.

顶层镜子设计成允许少量环境光穿过。

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Nanophase can make them 50 nanometers wide, which renders the zinc oxide transparent no more white goop since each crystalline particle is small enough to allow harmless light to pass through.

FORBES: The Science of Small

Nanophase can make them as small as 50 nanometers wide, which renders the zinc oxide transparent no more white goop since each crystalline particle is small enough to allow harmless light to pass through.

FORBES: The science of small