| 例句 |
Their military capability has been reduced because their air force has proved not to be effective.他们的军事实力因为空军的无能而被削弱。The tests proved the vaccine to be effective.实验证明这种疫苗是有效的。It's still too early to tell if the treatment is going to be effective.现在讲这种疗法是否有效还为时过早。Antidepressants are widely believed to be effective medications. The data, however, tell a different story.抗抑郁药被广泛认为很有效果，可数据显示根本不是这么回事。A randomized study of patients treated with the drug showed it to be effective.我们随机挑选了一些使用此种药物进行治疗的病人进行研究，发现这种药物确实有效。 |