be·ta·ine /ˈbitəˌin/
  內銨鹽; 甜菜鹼
  be·ta·ine /ˈbɪtəˌɪn/ 名詞
  Be·ta·ine n.  Chem. A nitrogenous base, C5H11NO2, produced artificially, and also occurring naturally in beet-root molasses and its residues, from which it is extracted as a white crystalline substance; -- called also lycine and oxyneurine. It has a sweetish taste.
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  betaine
       n : a sweet tasting alkaloid that occurs in sugar beets