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* Coffee percolation, where the solvent is water, the permeable substance is the coffee grounds, and the soluble constituents are the chemical compounds that give coffee its color, taste, and aroma.
* Coffee percolation, where the solvent is water, the permeable substance is the coffee grounds, and the soluble constituents are the chemical compounds that give coffee its color, taste, and aroma.
*咖啡渗流，
* Movement of weathered material down on a slope under the earth's surface.
* Movement of weathered material down on a slope under the earth's surface.