Two corresponding theorems, which represent the corresponding relationships between upper polish function and fast filter function, left polish function and slow filter function, are also proposed.
也提出了相应的定理，它代表的对应关系上的润色功能和快速的过滤功能，左抛光功能和慢速过滤功能，。
Experts warned that the filter would slow Internet speeds down massively while affording no guarantee of effectively blocking genuinely malicious sites.
专家警告说，过滤器会大幅度地降低互联网的速度，同时却并不能有效地阻止那些真正的不良网站。
Therefore, if a query filter field is one of these types, and the associated table is large, the query can be very slow.
因此，如果查询筛选字段是这种类型中的一个，而相关的表格很大，那么查询的速度会非常慢。
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