例句與造句

1. The construction of the Scotch hearth furnace led to the complete abandonment of log smelting.
2. Eventually, an American miner, Moses Austin, arrived in 1797 and built a Scotch hearth, or reverbertatory, furnace to replace the grossly inefficient log-pit furnaces, and the miners brought their lead to it to be smelted.
3. It's difficult to find scotch hearths in a sentence. 用scotch hearths造句挺難的