stand-by 📖 中文释义 [计] 备用设备, 准备, 备用[化] 备用的; 储备的; 辅助的 🔗 释义中的汉语词 备用 🧩 词形变化 复数 stand-bys 📘 English Definition(英文释义) n. One who, or that which, stands by one in need; somethingupon which one relies for constant use or in an emergency. ← stand-alones S 字母词表 stand-by agreement →