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碧海藍天
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碧海藍天的大頭照
 

加入日期: Apr 2002
文章: 442
引用:
Originally posted by Furier


請問什麼是 ph值小於7??



ph<7 等於酸性....
情感豐富的人常常覺得心頭一酸(ph<7)...眼淚就不聽使喚了......
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舊 2002-05-15, 10:13 AM #14
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