另一个例子是挑战Google的AlexaSearchPlatform，用于引导一系列垂直搜索应用程序。
Another example is the Alexa search Platform, designed to bootstrap a family of vertical search applications to challenge Google.
该项目一个主要的挑战是他们在水平面上被现有的长游泳池隔离，垂直上他们起居室的地板有3米的水平落差。
One major challenge is their being segregated horizontally by the existing long swimming pool, and vertically by a 3m level-change between their living-room floors.
这些都给移动性管理带来了新的挑战，如连接级别的切换控制、多判据的垂直切换决策等。
All these have brought new challenges to mobility management, such as connection-granularity handover control, multi-criteria vertical handover decision making.
在背光的设计中，一个主要的目标和挑战是保证在垂直于光的传播方向上提升光的利用效率。
In the backlight design, a major goal and challenge is to ensure that light efficiency has been enhanced in the direction that is perpendicular to the propagation direction of light.
在背光的设计中，一个主要的目标和挑战是保证在垂直于光的传播方向上提升光的利用效率。
In the backlight design, a major goal and challenge is to ensure that light efficiency has been enhanced in the direction that is perpendicular to the propagation direction of light.
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