1·Calculus - If left alone long enough, plaque begins to mineralize and harden into calculus or tartar because the plaque absorbs calcium, phosphorus and other minerals from saliva.
牙结石—如果菌斑呆的时间足够长，它就开始矿化变硬形成牙石或牙垢，因为菌斑从唾液中吸收了钙，磷和其他矿物质。
2·There are a variety of ingredients used in toothpaste to help prevent the accumulation of tartar on the teeth.
牙膏配方中加入了很多成分来防止牙垢的累积。
3·If plaque isn't removed promptly with proper oral hygiene, it hardens into tartar.
如果噬菌斑因为没有良好的口腔卫生而留在牙齿中，它将会升入牙垢当中。
4·By 10-15 years: teeth are worn, and heavy tartar build-up is likely with the possibility of some teeth missing.
10 - 15岁，牙齿磨坏了，严重的牙垢，还有些牙齿都脱落了。
5·When it hardens, the tartar will need to be removed by your dental professional.
当硬化的牙垢将需要您的牙科专业删除。
1·The Tartar woman doesn't look very happy – perhaps due to what looks like a painful hairdo!
这个鞑靼女人看起来不高兴——可能因为这个看上去痛苦的发型的原因吧。
2·When they got within four kilometres of the stone bridge, the French saw the enormous mass of Tartar cavalry, forming an immense curve, coming toward them at a jog-trot.
当他们距石桥不到四公里时，法国人看到大堆大堆的鞑靼骑兵，形成一个巨大的曲线，向他们缓步而来。
3·The cathedral was built to commemorate Ivan the Terrible's successful military campaign against the Tartar Mongols in 1552 in the besieged city of Kazan.
教堂是为了纪念在1552年伊凡雷帝的成功对鞑靼蒙古的军事行动中被围困的城市喀山。