back-to-backs 📖 中文释义 (back-to-back 的复数) a. 紧接的, 背靠着背的 🧩 词形变化 原形 back-to-back 📘 English Definition(英文释义) plural of back-to-backs. one after the other ← back-to-back test B 字母词表 back-to-basics →