The article raised doubts about how effective the new drug really was.

这篇文章对这种新药的实效有多大提出了疑问。

《牛津词典》

Just how effective the policy will prove cannot yet be judged.

只是这项政策能多有效还无法判定。

youdao

To measure how effective the acupuncture was, the researchers recorded how quickly each mouse pulled its sore paw away from a small bristly brush.

为了测量针灸生效的程度，研究者记录了每只小鼠将其“痛脚”从一个小型毛刷上脱开的速度。

youdao

A team from Massachusetts General Hospital and Sweden's Lund University studied how effective the biomarkers are as predictors.

VOA: special.2009.07.15

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

z So, this is what we find the actual z effective is for an electron in the helium atom.

所以这就是我们得到了实际有效的,对于一个氦原子的电子。

麻省理工公开课 - 化学原理课程节选

"This gives us a chance to see how effective the new standards are, " he told CNN.

CNN: 9 still hospitalized after Connecticut train collision

Here is where bankers privately express their doubts about how effective the two schemes will be.

BBC: Will Bank of England��s new lending schemes work?

This competition would become more intense and effective the more widespread HSAs and similar incentives became.

FORBES: Newt Gingrich's Entitlement Reform Plan