violent or unsteady movement of air or water, or of some other fluid
(空气、水等的)紊流,湍流
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the plane shuddered as it entered some turbulence. 飞机飞进湍流时,机身剧烈颤动。
〈喻〉 冲突;混乱
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a time of political turbulence. 政治动乱时期。
"late Middle English: from Old French, or from late Latin