This would be reasonable if it were not for the fact that scientists can easily arrange to cite themselves in their future publications, or get associates to do so for them in return for similar favours. (2019英语一 翻译T49)
主干:This would be reasonable
条件状语从句:if it were not for the fact that scientists… in return for similar favours
同位语从句: that scientists… in return for similar favours解释fact
翻译:如果不是因为这个事实:科学家们可以轻易地在他们将来的出版物中引用他们自己(的文章)或者让他们的同事为了相似的回报为了他们这么做。