effectiveness

中文意思

• n. 效力, 有效性

英文解釋

• n. power to be effective; the quality of being able to bring about an effect

詞形變化

複數

effectivenesses

例句

1. n. 效力, 有效性

   The manager decided to test the effectiveness of the new marketing strategy before spending more money.

   經理決定在投入更多資金之前，先測試新行銷策略的有效性。