gas saturation

例句：

1. 1. The gas saturation in the soil is crucial for plant growth.
   土壤中的气体饱和度对植物生长至关重要。
2. 2.The gas saturation of the oil reservoir is an important factor in its production.
   油藏的气体饱和度是其产量的一个重要因素。
3. 3. The gas saturation level in the atmosphere has been declining due to human activities.
   由于人类活动，大气中的气体饱和水平一直在下降。