return from thinning

例句：

1. 1.The forestry workers are thinning the trees to make room for new growth.
   林业工人正在疏伐树木，为新生长腾出空间。
2. 2. The thinning of the population has led to a decrease in crime rates.
   人口的减少导致了犯罪率的下降。
3. 3.The thinning of the trees will allow us to see the stars more clearly.
   树木的疏伐将使我们能更清楚地看到星星。