Gas exchange in the metabolizing tissues is referred to as internal respiration.

代谢组织中的气体交换称为内呼吸。

Internal respiration refers to gas exchange across the respiratory membrane in the metabolizing tissues, like your skeletal muscles, for example.

内呼吸是指在新陈代谢组织（例如骨骼肌）的呼吸膜上进行的气体交换。