Catecholtannins
儿茶酚丹宁
🗣️ 情景例句
There are abundant free materials available on the internet.
因特网上有丰富的免费资料提供。
The best teacher one can have is necessity.
我们能得到的最好教师是“需要”。
It turned out to be snoring! Men were found to be the worst offenders.
它竟然是鼾声。人类是这方面的罪魁祸首。