Going further into what causes them, one recent study looking at a karst region in Spain found that sinkhole activity is intensified during drought periods.

进一步研究导致它们的原因， 最近一项针对西班牙喀斯特地区的研究发现，天坑活动在干旱时期加剧。

With, you know, increasing temperatures, extended drought periods, to be able to ensure that the little water that we have actually is retained in that soil is going to be extremely valuable and important for farmers moving forward.

随着温度升高，干旱期会延长，要确保少量的水保留在土壤中，因为这对农民将是极其宝贵和重要的。