Osteocalcin
骨钙素；骨钙蛋白
🗣️ 情景例句
That's nothing at all.
不用客气。
Take the world as one finds it.
听之任之。
'Though Verrazano is by no means considered to be a great explorer,
虽然维拉萨诺绝对算不上一个伟大的探险家，