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vi.不减弱, (天气)持续不变;保持;保养;(使)不倒下保持不衰退; 英英释义: keep up v.maintain a required pace or levellengthen or extend in duration or space同义词:prolongsustainkeep in safety and protect from harm, decay, loss, or destruction同义词:conservepreservemaintainkeep informed同义词:ke