重点词汇
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钢铁
steel; iron; iron and steel industry; steely; iron-willed; firm; unyielding; hard; tough; strong; unbreakable
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怎样
how; wherein; what; in what way
How the Steel Was Tempered
钢铁
steel; iron; iron and steel industry; steely; iron-willed; firm; unyielding; hard; tough; strong; unbreakable
怎样
how; wherein; what; in what way