idle curve

例句：

1. 1.The idle curve of the economy is a concern for policymakers.
   经济中的空闲曲线是政策制定者的关注点。
2. 2.The idle curve in the graph represents the amount of time spent on leisure activities.
   图中的空闲曲线表示在闲暇活动上花费的时间。
3. 3. The idle curve shows that the economy is not growing at the same rate as it was before the pandemic.
   空闲曲线显示，与疫情前相比，经济增速没有增长。