n.等级；评估，评价；极限；收听率，收视率v.估价( rate的现在分词)；定级； 变形： 复数：ratings 双语释义：n.(名词)[C][U]等级，类别(尤指船只以吨位计算的等级) class or grade,especially of ships (according to tonnage)[P]收视率；收听率 a set of figures that show how many people watch or listen to a particular television or radi