Periosteous
[医] 骨膜的
🗣️ 情景例句
I have to turn off the lights,
我得关掉灯，
He is proud of his achievement.
他为自己取得的成就感到骄傲。
If it were gentle, only the more unstable rods fell.
如果地震轻微，只有不稳定的木棒倒下；