But some network security systems cannot combine these technologies, cannot give attention to efficiency of system, and scarce of fine-granularity inner security management.

但现有的一些网络安全系统未能将上述技术有机地加以结合，不能很好地兼顾系统执行效率，对系统内部缺乏细粒度的安全管理。

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Notice that this annotation is at the class level (not the method level), indicating that you clearly cannot combine the Declarative and Programmatic transaction models in the same class.

注意，这个注释是类级的（而不是方法级的），这表示您不能在相同的类中结合 Declarative 和 Programmatic 事务模型。

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But we cannot only use their works and quotations to research Wang Yangming's philosophy, and should combine his personal experience closely.

但对王阳明哲学的研究不能仅用其著作和语录，而应该紧密结合其个人经历以及周围环境的变化。

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If you combine weak governance of many Chinese companies with financial statements which cannot be relied on, it is a recipe for a stampede of capital out of the country at the first signs of a crisis.

FORBES: How to Ensure Strong Boards and Proper Accounting Standards in China

Many of the best private universities combine high tuition fees with an offer of aid to those who cannot pay the bill.

ECONOMIST: University education