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n.忧虑;不安;烦恼;摄动 变形: 复数:perturbations 英英释义: perturbation[ ,pə:tə:'beiʃən ]n.an unhappy and worried mental state同义词:disturbanceupset(physics) a secondary influence on a system that causes it to deviate slightlyactivity that is an intrusion or interruption同义词: