Yabla video uses of 优良

gěi
优良 yōuliáng
de
茶叶 cháyè
品质 pǐnzhì
形成 xíngchéng
奠定 diàndìng
le
坚实 jiānshí
de
物质 wùzhì
基础 jīchǔ
This lays a solid chemical foundation for fine quality tea leaves.