收藏品一组或一类被行家收藏的东西，如仿古玻璃制品或家用器具

One of a group or class of objects, such as period glass or domestic utensils, prized by fanciers.

焦宁；二苯氧芑胶染料用作生物染色剂的一组红色染料中的任一种，尤指用来探测核糖核酸的存在

Any of a group of red dyes used as a biological stain, especially to detect the presence of RNA.