check crack

例句：

1. 1. The car's engine has a check crack in the cylinder head.
   这辆车的引擎气缸头有一道裂缝。
2. 2.The old building had several check cracks in its walls.
   这座老建筑的墙壁有几处裂缝。
3. 3. The engineer carefully checked each crack to ensure it was not causing any structural problems.
   工程师仔细检查了每道裂缝，以确保它没有造成任何结构问题。