Deoxyhemoglobin
还原血红蛋白
🗣️ 情景例句
Find a productive hobby, and see if you can learn something.
找一个具有意义的爱好，看你能否从中学到什么。
Don't worry! It's nothing.
不要紧，没什么事。
What will be the population of these countries in the year 2000?
2000年不太发达国家的人口将是多少？