🔍 牛津詞典 🎯
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典

檢索以下詞典:
(Mr. Ng 不推薦使用 Google 翻譯!)
最近搜尋:
BNC: 38411 COCA: 36065

alumina

noun
/əˈluːmɪnə/
/əˈluːmɪnə/
[uncountable] (specialist)
jump to other results
  1. a white substance found in many types of rock, especially clay矾土
    Word Originlate 18th cent.: from Latin alumen, alumin- related to aluta ‘a kind of leather’, on the pattern of words such as magnesia.
BNC: 38411 COCA: 36065
BNC: 38411 COCA: 36065
BNC: 38411 COCA: 36065

👨🏻‍🏫 Mr. Ng 牛津詞典 📚 – oxford.mister5️⃣.net
切換為繁體中文
Site Uptime