Returns the system color used for the background of a grouped table.

返回系统颜色给组合列表作为背景。

youdao

youdao

The ROW data type can be equated to a table definition: it defines multiple columns that are grouped together into a tuple.

ROW数据类型可以等同于一个表定义：它定义可以组成一个元组的多个列。

youdao

Versus looking at, for example, helium or neon or argon, these are all inert gases, inert meaning essentially do not react, those were grouped together in the periodic table.

相反，他发现氦，氖，氩，都是惰性气体，惰性的意思是基本不参与化学反应，因此把它们放在周期表中的同一类里。

麻省理工公开课 - 化学原理课程节选