cysteine /'sistin/ 📖 中文释义 n. 半胱氨酸[化] 半胱氨酸 🧩 词形变化 复数 cysteines 📘 English Definition（英文释义） n. an amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine ← cysteinamine C 字母词表 cysteine hydrochloride →