Practice relates to a regularly adopted procedure or sample in conducting functions: It is his observe 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 : extensive-proven observe considered as unwritten legislation c : recurring apply Custom helps make all factors easy. establishment - a custom that for some time has been https://richardi689jvj8.sunderwiki.com/user