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n.
職權的等級;階層;梯隊;梯次編隊
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v.
排成梯形
Noun:
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a body of troops arranged in a line
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a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
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The higher echelons of the law and politics have become almost an Oxford preserve.
來源于:Times
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大于東西獨有藝術創作,受作品權保護的,抄襲必究
海詞辭典,十六年品牌標志