switchboards /s'wɪtʃbɔ:dz/ 📖 中文释义 n. 电话总机, 电话交换台( switchboard的复数形式 ) 🧩 词形变化 原形 switchboard 📘 English Definition(英文释义) n. telephone central where circuits are completed with patchcords ← switchboard operator S 字母词表 switchbox →