英语词汇external respiration怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	external respiration
释义	external respirationn.（名词） The exchange of oxygen and carbon dioxide between the environment and respiratory organs such as gills or lungs.外呼吸：外界和呼吸器官（如鳃或肺）之间氧气和二氧化碳的交换
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