Unlike the major scale, three different minor scales exist.
（和大調不同，小調有三種）
Composers will often merge two of these scales, natural minor and harmonic minor, for a more pleasing sound.
（為了讓音樂聽起來更好，作曲家經常會融合自然小調和和聲小調這兩種小調）
Recall the diatonic triads of both scales.
（我們回憶一下這兩種小調的全音三和弦）
Notice that many of the triads are the same.
（可以看到很多三和弦是一樣的）
Three pairs of triads (III–III+, v–V, and VII–viio) are different due to harmonic minor's raised seventh degree.
（由於和絃小調的第七個音向上升了半度，所以有三對三和弦不一樣（III–III+, v–V, 和 VII–viio））
III is prefered to III+. This is because III+, being an augmented chord, has a peculiar sound.
（III+較III更多使用，這是因為III+是增和絃，它的音響很獨特）
V is preferred to v since V contains a leading tone (and therefore is stronger). This does not mean that v cannot be used.
（V較v更多使用，這是因為V包含一個導音（音響更強），但這不意味著v不能使用）
VII and viio are both used equally. As you will later learn, each has a different function.
（VII和viio的使用頻率都差不多，後面學到它們時會有不同的功能）
The merged minor scale contains nine different diatonic triads.
（將這兩個小調融合起來就一共有九種不同的三和弦）