划一加幅flat: adj. (flatter; flattest) 1.平 ...rate: vt.,vi. 〔方言〕=ret. increase: vt. 增加,增大,增多;增强,增进 (opp. dec ...increase rate: 上涨率increase the rate: 加桨频下载手机词典可随时随地查词查翻译