英语翻译In a countercurrent exchange system ,the blood vessels carrying cooledblood from the flippers run close enough to the blood vessels carrying warm blood from the body to pick up some heat from the warmer blood vessels; thus,the heat is transferred from the outgoing to the ingoing vessels before it reaches the flipper itself.；的作用是哦 英语
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【答案】 【In a countercurrent exchange system状语】,【the blood vessels】主语】【 carrying cooled blood from the flippers分词引导的定语,修饰主语】 【run谓语】【 close enough状语修饰谓语动词】 【to介词 】【the blood vessels宾语】 【carrying warm blood from the body分词引导的定语修饰宾语】 【to pick up some heat from the warmer blood vessels表示目的的不定式引导的宾语补足语】; 【thus连词】,【the heat主语】 【is transferred被动式谓语】 【from the outgoing to the ingoing vessels before it reaches the flipper itself.状语,补充说明被动式谓语】
整个句子主干是：【the blood vessels （cold）】+ 【run】+ 【the blood vessels（warm）宾语】,【thus】,【the heat】 【is transfered】