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俗称茶单宁,是茶叶特有成份,具有苦、涩味及收敛性。
Commonly known as tea tannin, is a unique composition of tea, with bitter, astringent and convergence.
youdao
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俗称茶单宁,是茶叶特有成份,具有苦、涩味及收敛性。
Commonly known as tea tannin, is a unique composition of tea, with bitter, astringent and convergence.
youdao