顺序很重要，如果你的谓语以不同的顺序指定这些属性或在它们前罗列了其他属性，数据库就不会选择该复合索引。
The order is important because if your predicate specifies these properties in a different order or lists some other property before them, the composite index will not be selected by the database.
你至少应该指定一名懂得健康护理法的律师来保护你的医疗护理选择。
You should protect your health care decisions by at least appointing a health care power of attorney.
你就可以指定安全搜索级别、设置自己的位置，选择自己的语言以及选择每页显示的搜素结果数量。
You can then specify the Safe search level, set your location, choose your language, and choose the number of search results to display on a page.
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