grid hum

例句：

1. 1. The engineer designed the grid to support the weight of the building.
   工程师设计了网格来支撑建筑物的重量。
2. 2. The grid hums with activity as workers move around the factory floor.
   随着工人们来回走动，工厂的网格处充满了活动声。
3. 3.The grid hummed with excitement as the first batch of new products was unveiled.
   第一批新产品发布时，网格处充满了兴奋的声音。