triad

the triad of medication, diet, and exercise are necessary in diabetes care.

药物治疗、规定饮食和炼是糖病治疗可少的三步骤。

At tetrad stage, dyad, triad, tetrad with micronucleus and polyad appeared.

四分时期还出现二分、三分、含微核的异常四分及多分。

Dyskeratosis congenita (DKC) is a rare inherited disease characterized by the triad of abnormal skin pigmentation, nail dystrophy, and mucosal leukoplakia.

先天性角化良症（DKC）为一少见之遗传性疾病，三项主要特徵为皮肤色素异常、 指甲生长异常及黏膜白斑症。

This is a hierarchy of unequal diads and triads, extended by analogy to larger scales, from father-son to emperor-subject, and a lot in between.

这是一个平衡的二人或三人阶序，依此类推到更大的范围，从父亲和儿子到国王和随从，一而足。