They whizz through optical fibres, rarely getting lost or interfering with one another (which is why different coloured signals can be sent down a single fibre, to multiply its capacity).
In the colon, microbes synthesise vitamins for us and provide 10% of our calories by breaking down dietary fibre we cannot process.
在结肠内，微生物帮我们合成维生素并且通过分解我们不能消化的食物纤维给我们提供10%的卡路里。
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The next significant attack, it said, “may well come down a fibre-optic cable” and may be serious enough to merit a response under the mutual-defence provisions of Article 5.