We can call them triads and we'll be talking about what that is before-- so that's one reason: major versus minor.

我们可以统称为三和弦,我们一会儿会说到,好的,这是一个答案,大和弦和小和弦

耶鲁公开课 - 聆听音乐课程节选

So, the classes of T-cells: macrophages, natural killer cells, these are a class of cells that's particularly important called dendritic cells.

这类T淋巴细胞包括巨噬细胞,自然杀伤细胞等 统称为树突细胞,树突细胞尤为重要

耶鲁公开课 - 生物医学工程探索课程节选