Sterically hindered

Mandarin:
空间位阻
Explanation in English Language (EN):
A situation where the spatial arrangement of atoms or groups in a molecule makes a reaction difficult or impossible due to crowding. Steric hindrance can affect the reactivity of molecules and the properties of polymers.
Explanation in Mandarin (ZH):
由于拥挤,分子中原子的空间排列使得反应难以或不可能发生的情况。位阻会影响分子的反应性和聚合物的性质。(Yóu yú yōng jǐ, fēn zǐ zhōng yuán zǐ de kōng jiān pái liè shǐ dé fǎn yìng nán yǐ huò bù kě néng fā shēng de qíng kuàng. Wèi zǔ huì yǐng xiǎng fēn zǐ de fǎn yìng xìng hé jù hé wù de xìng zhì.)
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.