ammonia

ammonia — noun

1. a colourless chemical (formula NH3, with one nitrogen atom joined to three hydro

1.名詞C1
釋義

a colourless chemical (formula NH3, with one nitrogen atom joined to three hydrogen atoms) that has a sharp, choking smell; factories use it to produce fertilisers for crops, and a weak version mixed into water is sold for cleaning kitchens and bathrooms.

例句

Mr. Lin opened the bottle and the sharp smell of ammonia made his eyes water.

collocation: smell of ammonia

Most farmers in the valley use fertilisers made from ammonia to grow rice and corn.

collocation: fertilisers made from ammonia

同義詞
  • NH3

    the chemical formula; used in scientific writing

  • ammonium hydroxide

    specifically the water solution sold as a cleaner

用法筆記

Uncountable; takes no article in general statements ("Ammonia smells terrible") but takes an article when referring to a specific liquid product ("a bottle of ammonia"). Frequently used as a modifier before another noun: ammonia smell, ammonia solution, ammonia gas.

常見錯誤

❌I bought two ammonias for the kitchen.
✅I bought two bottles of ammonia for the kitchen.
💡ammonia is uncountable; quantify with 'bottle of', 'litre of', etc.