extrasystole /,ekstrә'sistәli/ 📖 中文释义 n. 期外收缩, 额外收缩 🧩 词形变化 复数 extrasystoles 📘 English Definition(英文释义) n a premature systole resulting in a momentary cardiac arrhythmia ← extrasyphilitic E 字母词表 extrasystoles →