An ultra-refined substance has been made extra pure by removing other substances from it.

High-fructose corn syrup is an ultra-refined sweetener found in many processed foods. 高果糖玉米糖浆是一种超精制甜味剂，许多加工食品中都有使用。

I began supplementing my diet by taking capsules of ultra-refined fish oil. 我开始服用超精炼鱼油胶囊以补充我的饮食。

of a very high quality, and showing a lot of skill or the result of many improvements

The bedpost had beautiful carvings accented in ultra-refined goldwork. 床柱上有精美的雕刻，上面点缀着超级精致的金饰。

Their music is traditional but their playing is ultra-refined, with many delicate embellishments. 他们的音乐是传统的，但他们的演奏非常精致，有许多精湛的表演手法。

very polite and showing a lot of knowledge of social rules

He is known to many as an ultra-refined and sensitive aesthete. 许多人都知道他是个极其优雅和敏感的唯美主义者。

The presenter spoke with ultrarefined eloquence. 主持人用极其优雅的口才说话。