如果您需要更改规则，那么只要在存储过程中更改一次，而不需要在调用该存储过程的每个应用程序中都进行更改。
If you need to change the rules, you only need to make the change once in the stored procedure, not in every application that calls the stored procedure.
你可能会因为卖出物品而损失300金币，但是只要它们救了你哪怕只有一次命，也是值得的。
You lose maybe 300 gold by selling, but even if it saves you from death even once, it is worth the price.
只要叫他一次真名字，大伙儿就会群起而攻之。
It only needed a single use of his real name and the gang would be at his heels.
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