A number of factors are accountable for this situation./A number of factors might contribute to (lead to )(account for ) the phenomenon(problem).造成这种情况的原因有很多。

The answer to this problem involves many factors.这个问题的答案涉及很多因素

The phenomenon mainly stems from the fact that...这一现象主要源于……

The factors that contribute to this situation include...导致这种情况的因素包括…

The change in ...largely results from the fact that......的变化很大程度上是因为……

We may blame ...,but the real causes are...我们可能会责备……，但真正的原因是……

A good case in point is ...一个很好的例子是……

As an illustration, we may take ... 举一个...例子

Such examples might be given easily.这样的例子很容易举出。

...is often cited as an example...是一个经常被引用的例子。

It may give rise to a host of problems.这可能会引起许多问题。

The immediate result it produces is ...它产生的直接结果是……

​It will exercise a profound influence upon...这将对……产生深远的影响。

Its consequence can be so great that...它的后果是如此之大以至于……