1. 動詞
   subtract現在分詞:
   不及物動詞:
   做減法
   及物動詞:
   減去...(數字、數量等)
   扣掉...(數字、數量等)
   subtracting ...(a: 數字、數量等) from ...(b: 數字、數量等) :
   把(b)減去(a)
   把(b)扣掉(a)
   

   同義字詞
   abate,deduct,knock off,take off
   

例句

1. Decrease the ratio by subtracting one.
2. Are they adding instead of subtracting ?
3. Next they begin adding to or subtracting objects from a set.
4. This means subtracting the old vector and adding the new one .
5. The user can switch between adding runs and subtracting runs .
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