oxyhaemoglobin
noun [ U ] biology UK specialized (US oxyhemoglobin) uk/ˌɒk.siˌhiː.məˈɡləʊ.bɪn/ us/ˌɑːk.siˌhiː.məˈɡloʊ.bɪn/
氧合血红蛋白（红细胞中鲜红的血红素在血液循环到肺部时与氧结合）
the bright red form of haemoglobin (= substance in red blood cells) that contains oxygen