They use the SQL/XML predicate XMLEXISTS to select XML documents based on one or multiple conditions which are expressed in XQuery notation.

它们使用 SQL/XML 谓词 XMLEXISTS 根据一个或多个条件选择 XML 文档，条件用 XQuery 表示法表示。

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Onboard battery-powered computer controls allow the kites to land themselves during extreme weather conditions, or if the tether is severed, and multiple motors provide a backup if one motor fails.

使用电池供电的电脑来控制使风筝飞行姿态，在极端天气条件下或者是系绳出现问题时通过电机来控制，同时配有多台电动机提供备用。

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Multiple conditions can be now defined on a single XML element or attribute.

可以在单个xml元素或属性中定义多个情况。

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Currently, little is known about differences in health care use and spending across states (or other geographic areas) for populations with multiple chronic conditions.

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People with mental health problems, or conditions such as asthma, Parkinson's disease, cancer, multiple sclerosis or cystic fibrosis must pay for many of their prescribed medicines and dressings.

BBC: Warning over 'creeping' NHS charges

Eventually, fewer and cheaper sensors should do the trick, but Google and other researchers are still working out how to combine readings from multiple sensors, and determining which sensors work best in conditions such as night driving or heavy rain.

ECONOMIST: Inside story