And if we experimentally know z what the ionization energy is, we actually have a way to find out what the z effective will be equal to.

我们实际上就有了一个办法,去找出有效的，等于多少,我们可以使用这里的方程。

麻省理工公开课 - 化学原理课程节选

.. And that's where a lot of...you know if a proper government can try figure out how to increase the revenue intake and then ... how to redistribute...somemore effectively.

所以就,如果政府能努力想办法,提高所得财政收入,和更加有效地重新分配支出。

普林斯顿公开课 - 国际座谈会课程节选

This is a much more efficient way to get DNA for a gene that you're interested for a couple of reasons.

用这个办法能更有效率地获取你,感兴趣的基因的DNA,原因如下

耶鲁公开课 - 生物医学工程探索课程节选