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up·date AHD[ŭp-dātʹ] D.J.[ʌpˈdeɪt]K.K.[ʌpˈdet]v.tr.（及物动词）up.dat.ed, up.dat.ing, up.dates - To bring up to date:更新：使…跟上时代：update a textbook; update the files.更新课本；更新档案
n.（名词）AHD[ŭpʹdāt'] - Information that updates.更新（旧信息）的信息
- The act or an instance of bringing up to date.更新的行为或事例
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