preliminary thinning

例句：

1. 1. The forestry team conducted a preliminary thinning of the trees to remove dead branches.
   林业队对树木进行了初步疏伐，以去除枯枝。
2. 2.During the initial stages of development, companies often engage in preliminary thinning to identify potential risks.
   在发展的初期阶段，公司经常进行初步疏伐，以识别潜在的风险。
3. 3.The decision to proceed with the project was made after a preliminary thinning of the feasibility studies.
   在可行性研究初步疏伐后，决定继续推进该项目。