tī​duì

echelon

梯队 梯隊 tī​duì
echelon
a group of units arranged in a step-like formation for military action or travel, or a group organized into batches for an activity
tier
a level or grade within an organizational structure, especially regarding personnel succession

Frequency

Movie subtitles
0.360 per million appears in 0% of films
Written text
2.63 per million

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