Negative lookahead assertion. This is the opposite of the positive assertion; it succeeds if the contained expression doesn't match at the current position in the string.

前向否定界定符。与肯定界定符相反；当所含表达式不能在字符串当前位置匹配时成功。

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Therefore it had to basically make a positive assertion about its constitutionality.

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Instead, Eximbank seems to be whistling past this graveyard by simply relying upon the assertion that Gazprom possesses a positive hard currency cash flow that can be accessed.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Brody Confirmation: Will Eximbank Be Allowed To Go The Way Of A Scandal-Ridden CCC?

Los Angeles is criticized for not having a defined city center, but I'd counter with the assertion that our many different "centers" are a positive.

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