有 + 史 + 以来
史 (shǐ) means "history" and is a concise, literary form of 历史. It often appears in compound expressions and written Chinese, such as 有史以来 (since the beginning of history) and 史上 (in history). It is commonly used in formal and journalistic contexts.
这是有史以来规模最大的一次展览。
zhè shì yǒushǐyǐlái guīmó zuìdà de yī cì zhǎnlǎn.
This is the largest exhibition in history.
他创造了这个项目史上最好的成绩。
tā chuàngzào le zhège xiàngmù shǐ shàng zuìhǎo de chéngjì.
He set the best record ever in this event.
史上最热的夏天可能就是今年了。
shǐ shàng zuì rè de xiàtiān kěnéng jiùshì jīnnián le.
The hottest summer in history might be this year.