undisturbed sample of soil

例句：

1. 1.The forest was undisturbed by human activity for centuries.
   这个森林在人类活动数百年的时间里保持了未受干扰的状态。
2. 2.The scientists found the samples undisturbed, with no signs of tampering.
   科学家们发现样本未受干扰，没有篡改的迹象。
3. 3. The old house remained undisturbed until it was discovered during a renovation.
   这座老房子直到翻新时才被发现，一直未受干扰。