英语释义
1. a union or group of three trinity
2. a chord of three tones consisting of a root with its third and fifth and constituting the harmonic basis of tonal music
3. a group of three usually related people or things
4. a secret Chinese criminal organization
5. a chord made up usually of the first, third, and fifth notes of a scale
6. a union or group of three
a triad of symptoms
7. a trivalent element, atom, or radical