n. power to be effective; the quality of being able to bring about an effect
n. 效力
[经] 有效性, 能行性
1. The effectiveness of the new teaching method was proven by the students' improved test scores.
新的教学方法的有效性通过学生成绩的提高得到了证明。
2. To measure the effectiveness of a product, we need to conduct a thorough analysis.
为了衡量一个产品的有效性，我们需要进行全面的分析。
3. Regular exercise can enhance the effectiveness of your overall health.
定期锻炼可以增强你整体健康的有效性。