During red wine brewing process, a special dipping process is applied to extract the extra aroma and tannin from the bark of the red grape.
红葡萄酒的发酵工艺有一个特殊的浸渍过程，这是为了从葡萄皮提取额外的香气和单宁。
As China abounds in the tannin extract, so it is of bright prospect to develop this process.
我国盛产栲胶，开发此法的前景是光明的。
As China abounds in the tannin extract, so it is of bright prospect to develop this process.
我国盛产栲胶，开发此法的前景是光明的。
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