Cementum
n. 牙骨质, 水门汀
🔁 扩展释义
【医】 粘固粉, 牙骨质, 水泥剂
🗣️ 情景例句
Say good-bye to Richard.
替我向Richard说声再见。
Maybe some other time.
也许下一次吧。
When the instrument is situated at more than 700 miles from the earthquake centre,
如果把这种仪器安装在距震源700多英里远的地方，