This book deserves to be studied carefully 这本书值得认真学习。
It ' s very difficult to find out the truth without studying carefully 不经过认真研究而要发现事实真相是非常困难的。
They have been studied carefully by lovers of art from all over the world 来自世界各地的艺术爱好者都仔细研究过这两副画。
I have studied carefully the problems existed in the earlier stage and corrected some of them 本文认真分析了前期研究存在的问题,并对系统存在的某些问题作了修正。
For this reason , you have to study carefully the ancient documents , and don ' t accept and suspect other ' s opinions blindly 而这需要对古代文献作仔细的爬梳,并且不盲目地相信和怀疑。