annually
 (ad.)一年一次,每年
 An·nu·al·ly, adv. Yearly; year by year.
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 annually
      adv 1: without missing a year; "they travel to China annually"
             [syn: yearly, every year, each year]
      2: by the year; every year (usually with reference to a sum of
         money paid or received); "he earned $100,000 per annum";
         "we issue six volumes per annum" [syn: per annum, p.a.,
          per year, each year]