flower thinning

例句：

1. 1. We need to thin out the dense population of this area.
   我们需要疏植这个地区的密集人口。
2. 2. The thinning process helps to improve the quality of the flowers.
   疏植过程有助于提高花朵的质量。
3. 3. During the flowering season, we thin out the branches to promote better growth.
   在开花季节，我们疏枝以促进更好的生长。