短語詞組短語nonnegative integer [數(shù)]非負整數(shù)Nonnegative ? 非負數(shù);非負的nonnegative ? 非負的nonnegative constants 非負常數(shù)nonnegative irreducible 非負不可約almost nonnegative 幾乎非負 返回 nonnegative