drop-off /'drɔpɔf/ 雅思英语词汇 📖 中文释义 n. 下降, 减少 🔗 释义中的汉语词 🧩 词形变化 复数 drop-offs 🔵 同义词slackslumpdecreaselesseningfalloffcliff 🔴 反义词increase 📘 English Definition(英文释义) n a noticeable deterioration in performance or qualityn a steep high face of rockn a change downward ← drop-method D 字母词表 drop-off charge →