A: The main difference is that developed countries may have more elaborate surveillance mechanisms to detect such outbreaks and stronger food safety systems in terms of inspections.

答：主要区别在于，发达国家可能具有能够发现此类疫情的较精密的监测机制以及较强大的食品安全检查体系。

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This section will elaborate runtime behavior of Slice pertaining to a distributed database environment in terms of these configurable policies.

本节将依次就这些可配置的策略详细介绍Slice与分布式数据库环境相关的运行时行为。

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First I elaborate research objectives and questions, research methods and resources, and explain some key terms and definitions.

论文首先阐述了研究的目的、研究问题的来源、和进行研究的方法，并解释了有关语音理论方面的概念。

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