You can photograph the flower but not its fragrance, you can photograph the candle, but not its light.

你可以拍下鲜花，但无法捕获她的芬芳，你可以拍下蜡烛，但不能汲取她的光芒。

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Dark matter is a form of stuff that does not interact with light, so cannot be seen, but makes its presence felt by exerting a gravitational pull on normal matter.

暗物质是一种不与光发生作用的物质，因而不可见。但是暗物质又是确实存在的，它与可见物质之间产生的引力效应证实了这一点。

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It is true, as I take a last look at the bay and its light, that what Wells up in me is not the hope of better days but a serene and primitive indifference to everything and to myself.

我最后看一眼海湾和海上的灯光：的确，在我心中升起的不是对于美好未来的憧憬，而是一种静谧而原始的淡漠，对万事万物淡漠，也对我自己淡漠。

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But travelling asset-light has not always worked in its favour.

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It added that the burgers were not initially withdrawn but the board had "reviewed its position in light of more recent media coverage" and began taking frozen burgers from school meals' menus from Wednesday.

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The light does not form an image of the reacting molecules, but its interaction with those molecules specifically, which frequencies are absorbed, and how strongly allows Dr Zewail and his followers to work out how the molecules distort and reorganise themselves during the course of a reaction.

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