undisturbed soil sample

例句：

1. 1.The soil sample was taken from a site that had not been disturbed by human activity.
   土壤样本是从一处人类活动未扰动过的地方取的。
2. 2. The research found that the undisturbed ecosystems are crucial for biodiversity conservation.
   研究发现，未受扰动的生态系统对于生物多样性保护至关重要。
3. 3. The team carefully collected samples from an undisturbed area to study the effects of climate change on wildlife.
   团队小心翼翼地从未受扰动的地区收集样本，以研究气候变化对野生动物的影响。