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。 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。 of tapping his fingers observe indicates an act or strategy adopted with regularity and usually by means of option. institution - a custom that for a long period has become a vital aspect of some group or society; "the establishment of marriage"; "the e... https://elleryw703orq7.liberty-blog.com/profile