In the past this process of transition has often proven difficult.
在过去，这种转变过程常证明是艰难的。
In the past this process of transition has often proved difficult.
过去这种过渡过程常证明是困难的。
This study investigated Chinese students' transition process in reading at an American university.
本研究调查了中国留学生在美国大学适应阅读的过程。
This study investigated Chinese students' transition process in reading at an American university.
本研究调查了中国留学生在美国大学适应阅读的过程。
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