| I | smelt |
|---|---|
| you | smelt |
| he/she/it | smelts |
| we | smelt |
| you | smelt |
| they | smelt |
| I | smelted |
|---|---|
| you | smelted |
| he/she/it | smelted |
| we | smelted |
| you | smelted |
| they | smelted |
| I | have | smelted |
|---|---|---|
| you | have | smelted |
| he/she/it | has | smelted |
| we | have | smelted |
| you | have | smelted |
| they | have | smelted |
| I | had | smelted |
|---|---|---|
| you | had | smelted |
| he/she/it | had | smelted |
| we | had | smelted |
| you | had | smelted |
| they | had | smelted |
单语范例（未经PONS编辑处理）
Copper smelting and refining processes can produce a variety of toxic byproducts, including mercury, sulphur dioxide, and arsenic.
en.wikipedia.org The company's core competence is within the fields of exploration, mining, smelting and metals recycling.
www.digitaljournal.com Mucking was host to a small iron smelting industry because of its workable deposits of iron ore.
en.wikipedia.org Elevated heavy metal concentrations in crops grown near zinc mining/smelting locations has also been observed.
en.wikipedia.org Iron slag suggests that they had learned to use the local ores for smelting and other materials included copper alloy and glass were also used.
en.wikipedia.org 浏览词典
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