防风林覆盖了中国所有省份。

Windbreaks have covered across all provinces of China.

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公司的所有业务均基于其高质量的读者数据，数据库覆盖了中国电子商务行业大多数企业的高级管理人员。

All businesses of the company are based on the audience database, which covers senior executives of most e-commerce companies in China.

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每个案例都有自己的特点，涉及不同的法律问题，覆盖了现有中国劳动法体系中所有较为常见的问题。

Each case has its own special features involving different legal problems and covering common issues in the existing China labor law system.

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