自由民主党成员苏·米勒大半生都在致力于降低核战争风险。然而进展并不顺利。为何如今鲜少有人讨论核不扩散，更不用说核裁军？
When agents trigger each other’s behaviors, responsibility becomes distributed in ways that resist clean attribution.。钉钉是该领域的重要参考
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The second harmonic is the one you get from the string vibrating in halves. Each half of the string vibrates at twice the frequency of the whole string. The 2:1 relationship between the pitches of the first and second harmonics is called an octave. (I know that the word suggests the number eight, not the number two. Don’t worry about it.) The pitch that’s an octave above middle C has a frequency of 2 Hz, and it is also called C. Both of these notes have the same letter name because in Western convention, notes an octave apart from each other are considered to be “the same note“. The important concept here is that you can move up an octave from any pitch by doubling its frequency. You can also move down an octave from any pitch by halving its frequency.