水平仪

例句：

1. 1.The engineer used a level to check the accuracy of his measurements.
   工程师用水平仪检查他的测量的准确性。
2. 2. The construction worker needs a level to ensure the stability of the building.
   建筑工人需要水平仪来确保建筑物的稳定性。
3. 3.The carpenter used a level to make sure the floor was perfectly level.
   木匠使用水平仪确保地板完全平整。