zhè / liǎng / gè / yīn / chéng / hé / qǐ / lái / zhèng / hǎo / gòu / chéng / yí / gè / bā / dù / shǔ / yú / bǔ / zú / yīn / chéng这两个音程合起来正好构成一个八度,属于补足音程。These two intervals together form exactly one octave, making them complementary intervals.