premolars

常见例句

• A tooth with a broad crown used to grind food,located behind the premolars.
  臼齒一種用作研磨食物的有寬齒冠的位於前磨牙後的牙齒。
• Perhaps that's because the premolars were doing all the hard work, he suggests.
  他建議道，也許那是因爲前磨牙做著所有艱辛的工作。
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