nailed-upˈneɪldˈʌpCOCA³¹⁵¹¹¹⁺⁴ 基本例句 na.钉牢系门,窗；把…钉在较高处 With such a mechanism, each department is charged only for using extra bandwidth rather than being billed for a larger, nailed-up circuit, regardless of use. 有了这样的一个机制，每个部门只按使用超额的带宽计费，而不是不管用不用都按更大的、定死的电路计费。 examw