名詞 crime rate:

1. the ratio of crimes in an area to the population of that area; expressed per 1000 population per year

1. The rise in unemployment is an important factor in the increase crime rate.
   失業(yè)的增加是犯罪率升高的一個(gè)重要因素。
2. The government is taking steps to control the rising crime rate.
   政府正采取措施，控制不斷上升的犯罪率。