含“double over”的英语例句

Our research indicates that poverty levels will double over the next thirty years if these policies remain in place.

Since 1945, more land has been converted to agriculture, than in the 18th and 19th centuries combined. At least a quarter of all fish stocks are over-harvested. Ten to 30 percent of mammal, bird and amphibian species are currently threatened with extinction. One-third of the world's population is living in water-scarce or water-stressed areas, and this is projected to double over the next 25 years. But, climate change may do more damage to the Earth than all of these other factors.