Mandarin:
聚酰胺

Explanation in English Language (EN):
A polymer containing amide linkages (-CONH-) in the main chain. Polyamides, such as nylon, are known for their strength, toughness, and resistance to chemicals and abrasion.

Explanation in Mandarin (ZH):
主链中含有酰胺键 (-CONH-) 的聚合物。聚酰胺（如尼龙）以其强度、韧性和耐化学性

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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.