internegative

例句：

1. 1. The internegative of 5 is -5.
   5的负数是-5。
2. 2. The internegative of 3 is 2.
   3的负数是2。
3. 3. The internegative of a number is the number minus its positive counterpart.
   一个数的负数是该数减去它的正数对。