Cementocyte
牙骨质细胞
🗣️ 情景例句
Harry's a professional camper, Mom.
Harry是露营专家，妈妈。
He can only speculate as to which horse will win the race.
他只能推测那一匹在赛马中会获胜。
The golden rule here is spread your risk --
分散你的投资风险。