Enkephalin is either of two closely related pentapeptides having opiate qualities and occurring in the brain,spinal cord,and other parts of the body.是什么意思_Enkephalin is either of two closely related pentapeptides having opiate qualities and occurring in the brain,spinal cord,and other parts of the body.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句