life-time /laɪftaɪm/ 📖 中文释义 [医]寿命 🔗 释义中的汉语词寿命 🧩 词形变化 复数 life-times 📘 English Definition(英文释义) n. the period during which something is functional (as between birth and death) ← life-threatening L 字母词表 life-time service →