{a. An occasion of disparity or unlikeness: There is a big difference in seem amongst a clarinet and an oboe.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。Need to thank TFD for its existence? Inform a pal about us, add a connection to this web site, or take a look at the webmaster's website pag