Deoxyhemoglobin
还原血红蛋白
🗣️ 情景例句
We had a cat when I was eight years old.
我八岁时养过一只猫。
Who rang the bell a while ago?
刚才谁在按门铃？
Are there any hobbies or sports you particularly like?
但是，如果你喜欢读中文的短篇小说。