coke sth
及物用法，宾语通常是被加工的煤（coal），表示把煤炼成焦炭。
The steel plant cokes coal in sealed ovens.
这家钢厂在密闭的焦炉里把煤炼成焦炭。
炼焦；把煤炼成焦炭
coked — past of coke
从煤中生产焦炭；转化为焦炭；(使)成焦炭
To produce coke from coal, or to turn coal into coke.
从煤中生产焦炭
To produce coke from coal.
转化为焦炭
To turn into coke.
一般现在时
The plant cokes coal in huge ovens.
这家工厂在巨大的炉子里把煤炼成焦炭。
一般过去时
They coked the coal overnight.
他们用一整夜把煤炼成了焦炭。
现在进行时
The coal is coking slowly in the oven.
煤正在炉中慢慢炼成焦炭。
规则动词，过去式和过去分词都是 coked；多用于工业语境，指把煤或重油炼成焦炭。
This factory cokes coal in huge ovens to make fuel for steelmaking.
这家工厂在巨大的炉子里把煤炼成焦炭，用来生产炼钢用的燃料。
用法提示：cokes 是动词 coke 的第三人称单数形式，表示把煤炼成焦炭。
They coked the coal for several hours until it turned hard and grey.
他们把煤炼了几个小时，直到煤变得又硬又灰。
用法提示：coked 是 coke 的过去式，表示过去把煤转化为焦炭的动作。
The coal is coking slowly inside the sealed oven.
煤正在密封的炉子里慢慢炼成焦炭。
用法提示：is coking 是 coke 的现在进行时，表示煤正在转化为焦炭。
及物用法，宾语通常是被加工的煤（coal），表示把煤炼成焦炭。
The steel plant cokes coal in sealed ovens.
这家钢厂在密闭的焦炉里把煤炼成焦炭。
不及物用法，主语是煤等原料，表示自身转化为焦炭。
The coal cokes slowly at high temperatures.
煤在高温下慢慢炼成焦炭。
被动语态，强调煤被加工的过程，常见于工业或技术描述。
The coal is coked in airtight ovens.
煤在密闭的焦炉中被炼成焦炭。
grammar · medium
易错句子Workers cook the coal in a sealed oven to produce coke.
正确表达Workers coke the coal in a sealed oven to produce coke.
cook 指加热烹制食物，不能表示把煤转化为焦炭的工业过程，该过程要用动词 coke。两词读音相近，中文学习者容易混用。
grammar · medium
易错句子The coal is coke at very high temperatures.
正确表达The coal is coked at very high temperatures.
构成被动语态时，be 动词后要用过去分词 coked，不能接动词原形 coke。中文动词没有形态变化，学习者容易漏掉 -ed。
grammar · medium
易错句子The factory coke the coal in large ovens.
正确表达The factory cokes the coal in large ovens.
主语 The factory 是第三人称单数，一般现在时的动词要加 -s，写成 cokes。中文动词不随主语变化，学习者常漏掉 -s。
炼焦煤
The steelworks relies on imported coking coal.
这家钢厂依赖进口炼焦煤。
炼焦厂
The new coking plant will process two million tonnes of coal a year.
这座新炼焦厂每年将加工两百万吨煤。
炼焦过程
During the coking process, coal is heated without air until it turns into coke.
在炼焦过程中，煤在隔绝空气的条件下加热，直至变成焦炭。
炼焦温度
The coking temperature must stay above 1,000°C.
炼焦温度必须保持在1000摄氏度以上。
炼焦时间
Longer coking time produces a harder, denser coke.
炼焦时间越长，产出的焦炭越硬、越致密。
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