Everstine is the technical director of food safety solutions at FoodChain ID, a company that advises food-sector clients.
# 使用装饰器模式组合存储（同时写入DB和CSV）
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Lego regularly runs make and take events in which participants can walk away with an exclusive set without spending anything. These free giveaways always cause a stir, but nothing gets the people going quite like Star Wars.