有效(Effectiveness)与效率(Efficiency)是我们生活中两个非常重要的概念,但人们又常常把二者混淆。让我们看看二者的异同与联系,并将其引伸。如果人们是在做一件正确的事,我们便说此事做得有效。如果人们是在做一件错误的事,我们便说此事做得无效。如果人们用正确的方法把一件事做得没有浪费,我们便说这件事做得很有效率。如果人们用错误的方 Effectiveness and Efficiency are two very important concepts in our life, but people often confuse the two. Let us look at the similarities and differences between the two and contact, and its extension. If people are doing the right thing, we will say that the matter has been effective. If people are doing the wrong thing, we say that the matter is invalid. If people do not waste a thing in the right way, we say it is very efficient. If people use the wrong side