Ugb
[医][=undecalcified granulated bone]未脱钙（异体）骨颗粒
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
Familiar paths and old friends are the best.
熟路好遵循，老友最可珍。
It's about my son Jim.
我想谈谈我儿子吉姆的事情。