With the help of the negative wildcard, you can now express the "one and only one userName and anything else" rule as in Listing 4.

借助否定通配符(negative wildcard)，现在可以表示“有且仅有一个userName，但可以有任意多个任何其他元素”规则，如清单4所示。

youdao

You want a career in the Mercury Theatre and in everything else I plan to do, then remember one simple rule: I own the store.

VOA: standard.2009.12.17

Hedging would be allowed, as an exception to everything else in the rule, and would not have to be precise.

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What else could we rule out?

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They have a great responsibility and should be paid appropriately, but I don't think that exempts them from every rule and system that everybody else has to abide by.

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