"He goes: 'Bricks are heavy.' And he said: 'So heavy bricks don't go very far.'"
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Most of the infrastructure will have been built just weeks before the event, but failure is not an option for sports events in particular. It's obviously unacceptable, says Wilson, "If you're five seconds late for the 100 metres."
Detecting e-bike battery fires, for example, is particularly difficult, since these can unfold suddenly. Some researchers are working on new ways of sensing smoke and fire, perhaps even more quickly than before. But, take note: any certified, working smoke alarm is better than nothing.，更多细节参见heLLoword翻译官方下载