Nontan
(=nonontan tanning)非鞣质, 非单宁
🗣️ 情景例句
Don't let us keep you from your math tutoring, Robbie.
别让我们妨碍你的数学家教， Robbie。
How many of these are you going to buy her?
你要买多少给她？
The boy was too nervous to speak.
那男孩紧张得说不出话来。