Yabla video uses of

jiǎn
chéng
蓝色 lánsè
When it comes it contact with [a] base, it turns blue.
chá
zhù
消化 xiāohuà
作用 zuòyòng
主要 zhǔyào
shì
茶叶 cháyè
中的 zhòngdì
咖啡 kāfēi
jiǎn
Tea helps improve digestion mainly due to the caffeine contained in tea leaves
茶叶 cháyè
zhōng
含有 hányǒu
大量 dàliàng
de
咖啡 kāfēi
jiǎn
huáng
wán
chún
lèi
化合物 huàhéwù
Tea leaves contain large amounts of such compounds as caffeine and flavanols
由于 yóuyú
茶叶 cháyè
zhōng
suǒ
hán
de
咖啡 kāfēi
jiǎn
茶碱 chájiǎn
because the caffeine and theophylline contained in tea leaves,