coltan

US

・

UK

A1 初級
n. (u.)不可數名詞鈳鉭鐵礦
Coltan is a metallic ore used in the production of electronic devices.
n. (u.)不可數名詞鈳鉭鐵礦（開採）
The coltan mines in the Congo are a source of conflict and exploitation.

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