thiamine carboxylic acid

例句：

1. 1.Thiamine is an essential nutrient for the human body.
   烟酸是人体必需的营养素。
2. 2.The patient's diet should include a balanced mix of vitamins and minerals, including thiamine.
   患者的饮食应该包括维生素和矿物质的平衡混合，包括烟酸。
3. 3. Thiamine deficiency can lead to serious health problems.
   烟酸缺乏可能导致严重的健康问题。