echelon
/'eʃәlɒn/
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📖 中文释义
- n. 梯形, 梯阵, 梯次编队
- vt. 排成梯队
- vi. 形成梯队
🔗 释义中的汉语词
🧩 词形变化
📘 English Definition（英文释义）
- n. a body of troops arranged in a line
- n. a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset