一根火柴或蜡烛点燃三样东西的不祥征兆至少可以追溯到17世纪，或者可能更早。

The ill-omen linked to the lighting of three things from one match or candle goes back to at least the 17th century and probably earlier.

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单根光缆的容量充足，可以同时支持多个电话、一个60兆互联网接入和超过400个电视频道。

This single fibre can support multiple phone lines, 60-megabit-per-second Internet access and over 400 television channels, with plenty of capacity to spare.

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