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commotion: suggests disturbing, sometimes violent, bustle and hubbub: the unexpected dinner guests caused quite a ~. （disturb令人不安implies interference with one's mental processes or emotional balance by worry, perplexity, or fear干扰人的，如the puzzling discrepancy disturbed me这个这个奇怪的差异令我不安） （bustle奔忙implies a noisy, intrusive, often self-important activity即吵闹的动作，如the hustle and bustle of city life如城市的奔忙，在2018-08-16 慌张stir-fuss组中，表示动作） （hubbub吵闹喧嚣denotes the confusing mixtures of sounds characteristic of the incessant movement of activities and business表示人群奔忙时吵闹的声音，如the hubbub of city streets城市街道的喧嚣，如<away from the hubbub远离尘嚣>是Thomas Hardy托马斯•哈代的小说，”喧”的意思是”大声说话”，”嚣”是喧哗吵闹，引申表示放肆跋扈盛气凌人，hubbub在2018-07-25 嘈杂din-clamor组中，表示声音）
tumult: suggests a shaking up or stirring up that is accompanied by uproar, din, or great disorder: the town was in a ~ over the war news. din和uproar在一组2018-07-25 嘈杂din-clamor
turmoil: suggests a state devoid of calm and seething with excitement: a well-ordered life that was suddenly thrown into ~. （seethe充满遍布to be full of，如the resort is seething with tourists all year round这处名胜一年四季游人如织，如he became caught up in a seething mass of arms and legs他被卷进了摩肩接踵的人群，如本例seething with excitement心绪不宁）
upheaval: suggests a violent and forceful thrusting that results in a heaving up or an overthrowing: a nation in need of peace after years of ~. （heave举起提起扔掉起伏to lift or pull with effort，如they heaved their luggage into the car他们把行李扔进车里，如he heaved himself out of bed他用力从床上爬起来） thrust猛然地推一下
commotion骚动: 指人群不安定地喧嚣奔忙，tumult动荡: 表示激起震荡，十分喧嚣混乱，turmoil混乱: 表示不得安宁的生活心理状态，但也可表动荡，upheaval动荡: 指猛推，导致被举起或推翻
记忆方法: 1）首字母CTTU想成CUT割掉<==骚动 "骚"的本意是"马不停地动"，形容不安定，如骚动骚扰骚害，说文: “骚,动也,扰也”，引申为举止轻佻或自作多情。离骚中骚的意思可能是表示”忧愁”，也许和本意有关
2）骚动的意思是不安定mean great physical, mental, or emotional excitement.
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