There is a general Standard English grammar rule in that you can only have one negative in a sentence.
有一个标准的英语语法规则，在一个句子中只能有一个否定句。
朗文OCLM-01单词
The general standard of the entries was very high.
【high】参赛作品的总体水准非常高。
外研社9上
And the general standard of the competition is much higher this year.
而且今年的比赛总体水平要高得多。
英语百科
General Standard
General Standard is a market segment of the Frankfurt Stock Exchange.
Companies which belong to General Standard have to fulfill minimum requirements in terms of transparency regulated by law. Stock issuers with a focus on national German markets are appropriate to General Standard. To be listed in the leading German stock index DAX companies have to fulfill higher standards. These belong to Prime Standard.