First, refer to different
1, clear: crisp and loud.
2, crisp: crisp and pleasant.
Second, the sources are different.
1, Qing: King Tomlobin's Revelation of the Praise of the Merchants: "Qing Sheng, who specializes in Xiao."
This crisp and loud sound is like the sound of a flute.
2, crisp: "The Legend of Heroes of Children" The eighteenth time: "That pipa is very mellow and crisp."
Pipa's voice is very flexible, crisp and pleasant.
Third, the emphasis is different.
1, clear: Loudness is displayed again.
2, crisp: it means beautiful sound.