carbon steel
US /ˌkɑːr.bən ˈstiːl/
UK /ˌkɑːr.bən ˈstiːl/

1.
碳鋼
steel in which the main alloying element is carbon, with no minimum content specified for other alloying elements (such as chromium, nickel, molybdenum, or vanadium)
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The chef preferred knives made of high-carbon steel for their sharpness.
廚師更喜歡高碳鋼刀具的鋒利度。
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Bridges are often constructed using durable carbon steel.
橋樑通常使用耐用的碳鋼建造。