Since the 1930s, Mary said, the biggest factors driving up waterstress in the state have been rising temperatures.
玛丽说到，自从20世纪30年代以来，影响本国用水问题的最大因素是当地气温的升高。
2
Some plants are woody in type—an adaptation designed to prevent collapse of the plant tissue when waterstress produces wilting.
有些植物是木本植物，这是一种适应性的设计，以防止植物组织萎缩时，水分胁迫产生萎蔫。
3
The researchers figured out waterstress with a computer model that calculated how much water trees were getting in comparison with how much they needed.