圣何塞的一些居民表示，随着近年来不平等现象的加剧，实现向上流动变得更加困难。

Some San Jose residents say that as inequality has grown in recent years, upward mobility has become much more difficult to achieve.

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自底向上的方法关注于标注好的信息，使用RDF表示，所以这些信息是机器可读的。

The bottom-up approach is focused on annotating information in pages, using RDF, so that it is machine readable.

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将现有的应用程序和厂商软件包分解成表示相关操作组的离散服务集(自底向上方法)。

Existing applications and vendor packages are factored into sets of discrete services that represent groups of related operations (bottom-up approach).

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They're colored different here to indicate one new difference that you know about now, and that's that there is an orientation, there's an up and down on the chain.

这里被涂成不同的颜色,来表示另一个不同之处,它是有方向的,表示双链一条向上,一条向下

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