面包、米、茶等主要食品已经是定量配给。
Staples such as bread, rice, and tea are already being rationed.
有3种主要的茶。
茶碱是咖啡因的近亲，也是茶中的主要兴奋剂，它在这两方面都是最有效的化合物之一。
Theophylline, a close structural relative of caffeine and the major stimulant in tea, was one of the most effective compounds in both regards.
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