Mandarin:
有色金属

Explanation in English Language (EN):
Metals that do not contain significant amounts of iron, including aluminum, copper, and zinc.

Explanation in Mandarin (ZH):
不含大量铁的金属，如铝、铜和锌。

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International Phonetic Alphabet (IPA)
- Definition: A standardized system of symbols used to represent the sounds of spoken language.
- Purpose: Helps linguists, language learners, and educators accurately describe pronunciation across languages.
- Example: The word “hello” in British English is transcribed as /həˈləʊ/ in IPA.