high effective levelling agent

例句：

1. 1.The high-efficiency levellingagent helps to reduce the noise pollution inthe city.
   这种高效的水平调节剂有助于减少城市中的噪音污染。
2. 2. The newlevelling agent is moreenvironmentally friendly than its predecessors.
   这种新的水平调节剂比它的前身更环保。
3. 3. The levelling agent was used toadjust the height of the buildings, making them more aesthetically pleasing.
   这种水平调节剂被用来调整建筑物的高度，使其更具美感。