雞蛋殼。。
所有跟帖:
• Haha…Because eggshells are almost entirely calcium carbonate -Leo5568- ♂ (1407 bytes) () 08/04/2023 postreply 14:14:27
• Haha…Because eggshells are almost entirely calcium carbonate -Leo5568- ♂ (1407 bytes) () 08/04/2023 postreply 14:14:27