"Currently there's evidence to suggest it takes 17 years for evidence to get into practice.
杜塞爾指出：「發展夥伴關係、自由貿易、多邊主義，甚至基本的互惠關係，都已成為過去。」他告訴 BBC，中國在拉丁美洲與加勒比海地區的存在「急遽擴張」，而美國的回應則依然「遲緩且被動」。
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Kleber Mendonça Filho's Oscar–nominated, BAFTA–nominated, Golden Globe–winning political crime thriller The Secret Agent is finally available to watch at home — and you absolutely should. Set mostly in the '70s during Brazil's military dictatorship, the film sees Civil War star Wagner Moura delivering a riveting performance as a man trying to evade persecution in his own country.，更多细节参见新收录的资料
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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.，这一点在新收录的资料中也有详细论述