Knocker uppersClockmaking advanced significantly in the 17th Century, says Handley, and there is evidence of people "mackling up their own alarm clocks when they go travelling, for example", she says. The first known mechanical alarm clock was invented in 1787, although it was only after the first patent was registered in 1876 that production became more widespread. Still, these wound spring alarm clocks were both unreliable and too expensive to be widely available for most people.
核武器是悬在人类头上的“达摩克利斯之剑”，核军控是维护全球战略稳定的重要保证。切实维护战后国际核秩序、维护国际核军控体系，就必须看清问题的症结。究竟谁是风险制造者，谁是负责任的维护者，不妨从以下几个问题展开思考。
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I can't force them, only make them aware of expectations. If they won't do
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