女孩該選理科男還是文科男?理科男簡直大獲全勝...
Vitamin C - Wikipedia, the free encyclopedia 你們認為呢?The name 'vitamin C' always refers to the L-enantiomer of ascorbic acid and its oxidized forms. The opposite D-enantiomer called D-ascorbate has equal antioxidant power, but is not found in nature, and has no physiological significance. When D-ascorbate i...
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