an atom or small group of atoms that has an electrical charge because it has added or lost one or more electrons离子
added to verbs to form nouns showing action or condition(加在动词后构成名词表示“行为,状态”)
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net切換為繁體中文