由此我们可以断定他写论文前咨询了一些专家 and therefore, we can say he had consulted some experts before doing his paper
and therefore,we can conclude that he must have consulted some experts before he took up his thesis.
as this we could affirm that he consulted some expert before he start with his paper
由此我们可以断定他写论文前咨询了一些专家 from this we could tell (or affirm)he must have consulted some experts before he wrote the dissertation.
由此我们可以断定他写论文前咨询了一些专家 ,and therefore,we can conclude that he must have consulted some experts before he took up his thesis.
答：这句话中主要是要理解 “on top of ”这一短语的意思是：在...之上,除...外 。 这句话可以翻译成：因此，在我已经要求的150个词的基础上，需要再...详情>>
