1·Others only studied and restudied without tests.
而另一些人则只是学习、再学习，没有测试。
2·It's [the result of] a long tradition from the later years of the Qing dynasty down to today. But we restudied the problem and revisited it and made it more perfect.
拼音源自清朝末年至今的长期实践，而我们只不过是对过去的问题重新研究和进行修改，使之更完美。
3·Mehthod The clinicopathological data of 10 children patients with bone metastatic neuroblastoma who were misdiagnosed and mistreated were restudied and their biologic behaviors were observed.
方法对10例误诊、误治的小儿神经母细胞瘤伴骨转移的临床病理资料进行认真复习，并观察其组织学特点。