An external layer, such as bark or rind.

外层外层，如树皮或果皮。

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An external layer of compact Bone surrounds a central area of spongy Bone, except at the marrow cavity.

骨的外层为质密的骨皮质，包围着海绵状骨松质中心区（不算骨髓腔）。

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The consumer layer contains the applications used by end users within an organization, or the inbound interfaces to external organizations (such as customers or partners).

使用者层包含组织内最终用户使用的应用程序，或外部组织（如客户或合作伙伴）的入站接口。

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Separate Flexible Interfaces from Foundational Data IT will cease to be the sole provider of interfaces and will build an integration and security layer that connects a portfolio of interfaces with internal and external sources of data.

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