The coffee grounds were steeped in a solution of potassium hydroxide, heated to 65 C (149 F) and stirred for 24 hours. The mixture was then dried.
将咖啡残渣浸泡在氢氧化钾溶液中，加热至65摄氏度（149华氏度）并搅拌24小时，然后将混合物烘干。
The coffee grounds were steeped in a solution of potassium hydroxide, heated to 65 C (149 F) and stirred for 24 hours. The mixture was then dried.
将咖啡残渣浸泡在氢氧化钾溶液中，加热至65摄氏度（149华氏度）并搅拌24小时，然后将混合物烘干。
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