Clinical obstetrics practice is a very important process. 临床产科实习是一个非常重要的实践过程。
In the process of practice,man at first sees only the phenomenal side,the separate aspects,the external relations of things. 人在实践过程中,开始只是看到过程中各个事物的现象方面,看到各个事物的片面,看到各个事物之间的外部联系。