effective from

基本解释

When is the contract effective from?
合同什么时候开始生效？
Effective period: The price list effective from January-1st, 2010 and it will replace earlier price list.
有效期：本价格表从2010年1月1日起生效，并取代以往价格表。
curit.blog.bokee.net
The in-memory sort operation can be made effective (from storage and computation standpoints) under the fact that each list Li is ordered by itself.
如果每个列表 Li 由自已排序，那么内存内的排序操作（从存储和计算的角度）可以变得很有效。

A team from Massachusetts General Hospital and Sweden's Lund University studied how effective the biomarkers are as predictors.
This is more well-established question of nurture, in terms of moving away from the way we normally teach to what is clearly more effective way.
这更是一种,培养方法问题，从我们平常的教学方法,转移到,明确的更有效的方法。
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They found that certain cells, in particular, epithelial cells from monkey kidneys, were very effective at propagating the virus.
他们发现有些细胞,尤其是在猴肾脏的上皮细胞中,这种病毒能够有效地增殖
耶鲁公开课 - 生物医学工程探索课程节选

In particular, strength in December exports can be partly explained by exporters rushing orders to avoid higher custom fees effective from January 2013.
FORBES: Barclays Calls China's Recent Data Dump 'Unexciting'