It's a cycle, meaning you're constantly refining.

这是一个循环，意味着你需要不断改进。

I spent a lot of time refining the forms.

花很多时间来完善这造型。

The main precursor to plastic is a byproduct of petroleum refining called hydrocarbon gas liquids.

塑料的前身是石油炼的副产品，被称为液化烃气。

Despite the past glories, Dehua craftsmen never stop refining their skills.

德化白瓷艺术历久弥新，有赖于德化工匠一直以来对于技艺追求精益求精。

Gelder is vice president of refining at consulting company Wood Mackenzie.

盖尔德是咨询公司Wood Mackenzie炼油业务的副总裁。

Well again, we've got to be careful about refining this.

同样 们得谨慎炼这理论。

Is it the cost of crude oil, taxes, refining and profits or distribution?

是原油价格, 税收, 纯和利润还是分配?

We must keep honing and refining until we find that noun, verb or adjective.

们必须不断地推敲，直到找到这个词为止。

Extracting, processing and refining these types of minerals can be very expensive and time-consuming.

开采、加工再炼这矿物成本极高，还非常费时费力。

But mining and refining lithium can threaten the natural environment and contribute to pollution.

但开采和炼锂会危害自然环境，造成污染。

That includes refining the gas, also transporting it and the profits for those companies.

这包括炼与运输汽油以及这公司的利润。

Rockefeller targets a byproduct of refining oil that for years has been thrown away.

洛克菲勒炼油中的一种副产品 很多年来 它都被当成废物丢掉。

Then there's the cost of refining the gas. That adds $1.12 per gallon.

然后还有炼汽油的成本，每加仑再加上1.12美元。

Before that, oil refining ability had not fallen in any year for at least 30.

在此之前，炼油能力至少有30年没有下降过。

The Iranian Petroleum Minister says the country has started refining its crude oil in Venezuela.

伊朗石油部长表示，该国已经开始在委内瑞拉炼原油。

Sour crude requires more refining than sweet crude, which is low in sulphur and, as a result, often more valuable.

高硫化油比低硫原油需要更多次炼，因而低硫原油价值更高。

You have to read widely, constantly refining and redefining your own work as you do so.

你必须得广泛阅读涉猎，同时不断精练并且重新定义自己的作品。

Well, those refining costs and profits are the smallest slice of what you pay at the pump.

好吧，那炼油成本和利润是你在加油站支付的最小的部分。

Refining profits are at high levels, notwithstanding the recent imposition of a windfall tax by the government.

尽管政府最近征收暴利税，但炼油利润仍处于较高水平。

Now it is not perfect, and I'm going to spend the rest of my life refining it.

这个框架不是完美的，会用余生不断完善它。