For details on specific operator, including syntax and examples, click on the specific operator to go to its reference page.有关特定运算符的详细信息，包括语法和示例，请单击特定运算符以转到其参考页。
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$natural | sort() or hint() methods that can be used to force either a forward or reverse collection scan.sort()或hint()方法提供的特殊提示，可用于强制进行正向或反向集合扫描。
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