Ostein
n. [生化]骨胶原
🔁 扩展释义
【医】 骨胶原
🗣️ 情景例句
Listen to the sounds of the summer that surround us.
仔细倾听环绕我们的夏夜声息。
I'm twenty-one years old.
我21岁。
I got very angry.
我非常生气，