Learn Chinese Smarter
yě liàn jīn shǔ
冶炼金属
smelt metal
yě liàn jì shù
冶炼技术
smelting technology
yě liàn chǎng
冶炼厂
smeltery
yě liàn lú
冶炼炉
smelting furnace
yě liàn shí jiān
冶炼时间
duration of heat
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