sawtooth sweep

例句：

1. 1. The team used a sawtooth sweep to clear the path for the construction workers.
   该队使用锯齿状扫掠为建筑工人开辟了通道。
2. 2.The engineer designed a sawtooth sweep that would help the machine move more efficiently.
   工程师设计了一种锯齿状扫掠，以帮助机器更有效地移动。
3. 3. During the construction, the sawtooth sweep was used to level the ground and prepare it for the next layer of concrete.
   在施工期间，锯齿状扫掠被用来平整地面并为下一层混凝土做准备。