effectiveness
UK/i'fektivnis/US
TOEFLB2
Definitions
n.
The quality of successfully producing a desired result.
有效性；效力。
Root Breakdown
Root-derivedeffectiveout of, former
+
-nessmake, do
=effectiveness
effective + -ness = 'the state of being effective.' Transparent abstract noun.
Common Collocations
- 1.measure effectiveness衡量有效性
- 2.cost-effectiveness成本效益
- 3.question the effectiveness质疑有效性
Example Sentences
- 1.
Studies questioned the effectiveness of the treatment.
- 2.
We measure the effectiveness of each campaign.