Spirit level
01
水平仪, 气泡水平仪
a tool consisting of a vial filled with liquid and an air bubble used to determine horizontal or vertical alignment
例子
The builder used a spirit level to ensure the shelf was straight on the wall.
建造者使用水平仪确保架子在墙上是直的。
Before hanging the picture, he checked the frame with a spirit level to make sure it was level.
在挂画之前，他用水平仪检查了画框，以确保它是水平的。
