所谓大三度是指三个音之间的关系是全音的关系，也就是有两个全音，便是大三度。
同理，加大三度的根音，其上加一个纯五度。
This is the same as a root with a major third and a perfect fifth added above it.
大三和弦是包含加大三度的根音在内的三音和弦，其上加一个小三度。
The major triad pattern is a pattern of three notes consisting of a root or fundamental with a major third added above it, and a minor third added above that.
大三和弦是包含加小三度的根音在内的三音和弦，其上加一个大三度。
The minor triad pattern is a pattern of three notes consisting of a root or fundamental with a minor third added above it, and a major third added above that.
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