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单词 perturbation
释义 per·turb·ationBrE /ˌpɜːtəˈbeɪʃn/NAmE /ˌpɜːrtərˈbeɪʃn/ noun [U] (formal) the state of feeling anxious about sth that has happened 忧虑;不安;烦恼 SYN alarm [C, U] (specialist) a small change in the quality, behaviour or movement of sth 摄动;微扰;扰动;小变异temperature perturbations 温度的些微变化
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