Practice relates to a frequently followed method or pattern in conducting functions: It is actually his exercise to confirm all statements. 知乎，让每一次点击都充满意义 —�?欢迎来到知乎，发现问题背后的世界。 b : prolonged-established exercise considered as unwritten regulation c : repeated practice Custom would make all points straightforward. Wide pennant, flown through the masthead o... https://germaineo714iao9.blogoscience.com/profile