U级的英文：U-certificate

certificate是什么意思：n. 证明书；执照；凭证，单据；证券；纸币v. 发证书给；用证书批准；用证书证明gold certificate金币流通券|金券|金证券 scrap certificate车辆拆毁证明书 A certificated lawyer.合格的律师。到沪江小D查看U级的英文翻译>

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