| effectiveness | |
| 级别 | 附加级 |
| 音标 | [ ɪˌfek'tɪvnɪs ] |
| 解释 | n.有效，有力；有效性；效益；效用 |
| 英英释义 | |
| 发音 |  |
| 例句 |
1. Our research attempts to evaluate the effectiveness of the different drugs. 我们的研究试图对不同药物的疗效进行评估。 2. The drugs work well at first but gradually lose their effectiveness. 这些药的效果起初非常好，但后来逐渐失效。 来自《简明英汉词典》 |
