[ U ] specialized mathematics used in mathematics to mean a number whose value is not known or not stated(数学中的)未知数,不定数
[ U ] specialized mathematics used more generally to represent a number that is not known or exact(泛指)未知数,不定数
language written abbreviation fornoun 名词(noun的缩写)
written abbreviation for nitrogen氮(nitrogen的缩写)
written abbreviation for normal正常的(normal的缩写)
used in writing to mean "and"(用于书面语,表示 and)
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net切換為繁體中文