Use the “one in, two out” rule. The rule: whenever you bring in an item, you have to throw away two other items.

使用”一进两出“原则 ：拿入一件物品的同时，扔掉另外两件。

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Rule number two: When the customer is wrong, refer to rule number one.

第二条：如果顾客错了，请参照第一条。

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Two of the earlier approaches used an Apache ProxyPass rule to handle this problem, while one approach used a special-purpose server-side script to get the data from the NWS server.

此前有两种方法使用 Apache ProxyPass 规则来解决这个问题，还有一种使用专用的服务器端脚本从 NWS 服务器上获取数据。

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Of course, everyone knows that it is better to be number one than number two, but the Wallet Allocation Rule makes it possible to calculate precisely what this impact is.

FORBES: The Wallet Allocation Rule and Your Brand

Last month FIFA's executive committee announced plans for a new two-tier ethics committee -- one to investigate corruption, the other to rule on the cases.

CNN: SHARE THIS

The BBC spoke to two experienced pilots and one helicopter safety consultant, all of whom were unaware the 1km visibility rule applied in certain scenarios.

BBC: Vauxhall helicopter crash 'was preventable'