Yabla video uses of 年轮

作为 zuòwéi
zhì
qín
shī
shǒu
shàng
zhè
kuài
面板 miànbǎn
一道 yīdào
一道 yīdào
de
年轮 niánlún
So, as a guitar maker, the piece of wood I have in my hand, these growth rings...