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Yabla video uses of
微量元素
这种
zhèzhǒng
功能
gōngnéng
与
yǔ
茶叶
cháyè
中
zhōng
所
suǒ
含
hán
的
de
微量元素
wēiliàngyuánsù
氟
fú
有关
yǒuguān
This kind of function is related to the trace element fluoride contained in tea leaves.