Oil is refined to remove naturally occurring impurities.

油经过提炼去除天然生成的杂质。

《柯林斯英汉双解大词典》

The Fluent API methods have been refined to be more intuitive.

精化了Fluent API方法，直观性更好。

youdao

The leftover products are then refined to produce a fuel that cars can use.

然后再将剩余的物质精炼，最终生产出了能被汽车利用的燃料。

youdao

They underscored support for legislation already introduced that,among other things, seeks to cut the flow of refined petroleum products into Iran.

VOA: standard.2010.04.14

In addition to this major benefit, Sun points out that less refined grains tend to have more nutritional benefits than their refined counterparts.

VOA: standard.2010.06.25

House of Representatives voted to impose sanctions on companies providing refined gasoline to Iran.

VOA: standard.2009.12.18

Probability calculations could be refined to take into account how different bodies withstand crashes.

FORBES: Smart Dummies

The searches could then be refined to see photos of the users, their friends and places they've worked.

CNN: Doug Gross,

No arguments: this is "The Daddy" of sport watches, around for 60 years, but continually refined to this, its current commercial apotheosis.

WSJ: Ready for Action