It USES a scheduler to initiate periodic events, such as crawler executions and full-text index maintenance.

它使用一个调度程序来发起周期性的事件，比如爬网程序执行和全文索引维护。

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Context a low ankle brachial index (ABI) indicates atherosclerosis and an increased risk of cardiovascular and cerebrovascular events.

低踝臂指数(abi)与动脉粥样硬化和心脑血管事件风险增加相关。

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Events are usually quite small, and you can easily store, index, and search millions of them on a low-end relational database.

事件一般来说都比较小，你可以很容易地在一个廉价的关系型数据中对事件进行存储，做一些索引，并且在上百万的事件中进行搜索。

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Facebook is testing whether to follow Twitter's lead and allow users to click on a hashtag to pull up all posts about similar topics or events so it can quickly index conversations around trending topics and build those conversations up, giving users more reason to stay logged in and see more ads.

WSJ: Facebook Working on Incorporating the Hashtag

On average, the performance of the index around hurricane landfall dates is worse after major events like Hurricane Katrina.

FORBES: Insurers Brace For Irene's Multi-Billion Dollar Bill