Gāngqín / lǎoshī / yāoqiú / xuésheng / xiān / mànmàn / liànxí / fēnsàn / héxián / zài / tígāo / sùdù钢琴老师要求学生先慢慢练习分散和弦,再提高速度。The piano teacher asked the student to practice the arpeggios slowly before increasing the speed.