It transmits both vertically and horizontally.

既可垂直传播，也可水平传播。

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The optimal approach in most cases is to think both vertically and horizontally.

大多数情况下的最佳方法是同时垂直和水平地思考。

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Collaboration diagrams can expand both vertically and horizontally to accommodate additional objects.

协作图可以垂直和水平地展开，从而适应附加的对象。

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But more importantly you have to know how fast you are going - both vertically and horizontally.

BBC: Mars Curiosity rover success depends on 'crazy' landing

Apple continues to introduce desired products and user experiences across a greater geography and price points, expanding its reach both vertically and horizontally.

FORBES: Apple Will Deliver Q4 with Very Bright Setup into FY2012

Amazon.com has been expanding both horizontally and vertically, raising barriers that keep competition off its turf, as other successful web-based have been doing, including Microsoft (NASDAQ:MSFT), Google (NASDAQ:GOOG), and Oracle (NASDAQ:ORCL).

FORBES: Don't Cry for Amazon.com