尽管癌症的病因正被揭开，但我们还没有任何预防它的有效的方法。

Although the causes of cancer are being uncovered, we do not yet have any practical way to prevent it.

《柯林斯英汉双解大词典》

由高中主办的的有效的强制性项目是解决这一严重问题的唯一办法。

An effective and mandatory program sponsored by the high school is the only solution to this serious problem.

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因为那样做将缩小您的有效的目标市场。

That will only serve to shrink your effective target market.

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There are children who by a relatively modest donation to an effective aid agency, you could save their lives.

要拯救这些儿童的生命,只需要你向比较有效的救助机构,捐赠适量的钱款。

普林斯顿公开课 - 人性课程节选

z So what we end up seeing is 34 that the z effective is equal to positive 1 . 3 4.

看到有效的,等于+1。

麻省理工公开课 - 化学原理课程节选

It's not your horizon; it's not my horizon; it's that effective history which takes place when our horizons merge.

这不是你的视域，也不是我的视域;,而是我们的视域融合时产生的有效历史。

耶鲁公开课 - 文学理论导论课程节选