The IETF's standard for compressing HTTP contents includes two levels of encoding: content encoding and transfer encoding.

IETF用来压缩HTTP内容的标准包括两级编码：内容编码和传输编码。

youdao

The Shenguang III TILICS adopts two levels of database design and includes general control, service FEP and distributed control service FEP.

神光III原型装置，采用两级数据库设计，包括总控和服务FEP及分控服务FEP。

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This method includes two stages and four levels, the first stage: rebuilding data flow and control flow of the software, this stage includes module level mapping and function level mapping.

第一阶段：重构软件的数据流程和控制流程。该阶段包括模块级映射和函数级映射。

youdao

The homes themselves will be available in nine different models that range from the 640-square-foot, one-bedroom Connect:2.1 to the Connect:8.4, a 2, 560-square-foot abode that spans two levels and includes four bedrooms.

FORBES: By Land or by Sea: New Prefab Firm Offers Game-Changing Delivery System

The programme gives enterprise customers a choice of two levels of support, alongside access to the time-saving administration tool, Landscape, which includes audit, compliance and ongoing management features for large desktop deployments.

ENGADGET: Ubuntu 12.04 LTS Precise Pangolin hits the web, with HUD in tow