to the best of knowledge

He never made a will, to the best of my knowledge.

据我所知，他从未立过遗嘱。

《牛津词典》

He explains, "If ant colonies had worked out a reliable way to identify the best routes between their nest and food sources, the company managers figured, why not take advantage of that knowledge?"

他解释说：“如果蚁群已经找到了一种可靠的方法来确定蚁巢和食物源之间的最佳路线，那么公司经理们就会想，为什么不利用这种知识呢？”

To the best of my knowledge we have the lowest turnover in the tech industry.

据我所知，我们公司的人员流动率在高科技行业内是最低的。