基本解释汇率变化同根派生 exchang-rate相关词英汉例句Businessmen can helpfully describe the effects of interest or exchange rates on their own business, but that defines the limit of what they can knowledgeably say.商人不妨描述利率或者汇率变化对自己的企业有何影响，但他们所能说的也仅此而已。exchang-rate更多例句