The key difference here is that messages placed in a topic include a parameter that defines the message durability (how long it should remain on the server awaiting subscribers).

这里关键的不同在于放在一个主题中的消息包括了一个参数，这个参数定义了该消息的耐久性（它能够在服务器上等待订阅者多长时间）。

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Its slip resistance and durability provide stability and long term wearability.

它的滑性和耐久性提供稳定和长期的耐磨性。

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On the other hand, the Seepage of the concrete would also accelerate the deterioration of the concrete, and put evil forth on the long-term safety and durability of it.

混凝土渗透反过来又会加速和促使混凝土的进一步恶化，严重影响其结构的长期安全和耐久运行。

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The functions of the Leica M are consistently constructed for extreme durability and a long working life.

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In addition to their outstanding performance and reliability, these drives offer durability over the long haul - as contrasted with the possibility of mechanical failure with HDDs.

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And the long-term durability and reliability of these projectors have yet to be proven.

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