999英语网 英语单词
Knoppern的音标发音
Knoppern
英式发音：[npn]
美式发音
(n.) A kind of gall produced by a gallfly on the cup of an acorn, -- used in tanning and dyeing.
手打:曼弗雷德
(n.) A kind of gall produced by a gallfly on the cup of an acorn, -- used in tanning and dyeing.
手打:曼弗雷德