Osteocalcin
骨钙素；骨钙蛋白
🗣️ 情景例句
OK.
好。
A thousand words will not leave so deep an impression as one deed.
千言万语不如一个行动。
I argued that if I spent less time exhausting myself at exercises in the morning,
我辩解说，早晨少耗费精力锻炼，