effectiveness
US
UK effectiveness n: (ability to accomplish aim)
SC 有效性 yǒu xiào xìng
SC 效能 yǒu xiào xìng，xiào néng
TC 效能
TC 效能
The opposition questioned the effectiveness of the government's policy.
对方质疑了政府政策的有效性。
cost-effectiveness n: (good value for money)
SC 性价比