plus /ˈplʌs/
  正差加上,加,增加(a.)正的,附加的正號,加號,附加額,正數,增益
  plus /ˈpləs/ 形容詞
  正型,加(的),加號,陽的
  plus
  加
  Plus a.
  1. Math. More, required to be added; positive, as distinguished from negative; -- opposed to minus.
  2. Hence, in a literary sense, additional; real; actual.
     Success goes invariably with a certain plus or positive power.   --Emerson.
  Plus sign Math., the sign (+) which denotes addition, or a positive quantity.
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  plus
       adj 1: on the positive side or higher end of a scale; "a plus
              value"; "temperature of plus 5 degrees"; "a grade of C
              plus" [ant: minus]
       2: involving advantage or good; "a plus (or positive) factor"
          [syn: positive]
       n 1: a useful or valuable quality [syn: asset] [ant: liability]
       2: the arithmetic operation of summing; calculating the sum of
          two or more numbers; "the summation of four and three
          gives seven"; "four plus three equals seven" [syn: summation,
           addition]