1)There are many factors explaining / accounting for / contributing to this phenomenon .
許多因素導致了這一現象。(首先， 其次， 另外， )
2)There are several reasons which may account for my preference of the program .
以下一些原因可以解釋我對這一課程的偏好。
3)There are a large number of reasons for this social phenomenon , but in general , they come down to three major ones .
導致這種現象的原因有很多，但總體來說，主要有三點。(首先， 其次， 最後， )
4)There are mainly two reasons behind this phenomenon .
在這一現象背後主要有兩點原因(首先， 其次， )
5)There are mainly three different reasons for college students to take a work-study program .
大學生參加勤工儉學主要有三個方面的原因。
6)There are many factors deciding / influencing my choosing future job .
有許多因素決定/影響我對將來工作的選擇。
7)There reasons for this phenomenon mainly lie in the following two aspects .
產生這一現象的'原因主要有以下兩個方面。
8)The reasons for education to enter the market are obvious .
教育走向市場化的原因是顯而易見的。
