品位降低 : down grading; downgrading..
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feather down color grading 异色羽绒分选
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以上来源于: WordNet
With the axle journal protection sleeve in disassembling of wheels, the problem of "down grading" can be solved well.
应用解轮轴颈保护套可以较好地解决“降级”问题。
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With no evaluation deal in place, the city will revert to its previous system of grading teachers on the up-or-down scale.
WSJ: State Warns School Aid Is at Stake
Before other publications did, FORBES developed an increasingly sophisticated system of grading the long-term performance of funds, in both up and down markets.
FORBES: James W. Michaels
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