odontolith

常见例句

双语例句

• What are dental calculus and odontolith?
  什么是牙垢和牙石？
• Can we prevent dental calculus and odontolith?
  牙垢和牙石可以预防吗？
  bofan6688.blog.163.com
• How to remove the dental calculus and odontolith?
  怎样除去牙垢和牙石呢？
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