夜很*^*安静
practical proof英 [ˈpræktikəl pru:f] 美 [ˈpræktɪkəl pruf] 实践证明双语例句：Strategic Choice of the Development of Small Towns: Practical Proof and Theoretical Analysis University Branding in the path of inquiry, the theoretical analysis to compare with the typical case in the form of combining efforts to ensure the availability of theoretical analysis, have practical proof.
