I looked all over the country, and I found that between five and 10 percent of all U.S. jurisdictions actually use any type of risk assessment tool, and when I looked at these tools, I quickly realized why.
我找遍了全国， 发现5%至10%的 美国管辖区域 实际使用了某些类型的风险评估工具， 我查看了这些评估工具之后， 很快意识到其中缘由。