fracton

例句：

1. 1. The crack in the wall was caused by a sudden drop in temperature.
   墙壁上的裂缝是由温度突然下降引起的。
2. 2.The engineer carefully measured the dimensions of the fracton before repairing it.
   工程师仔细测量了裂缝的尺寸，然后才进行修复。
3. 3.The fracton between the two plates is what allows them to slide past each other.
   两个板之间的裂缝是它们能够滑动通过的原因。