[ C or U ] a means of behaving or carrying out something that has existed for a long period which is considered as the standard way: 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-set up exercise considered as unwritten law c : repeated observe Custom tends to make all factors easy. https://paulo384pnb0.estate-blog.com/profile