droughts是什么意思？

Uncommonly severe droughts brought on by global climate changes have led to forest-eating wildfires from Australia to Indonesia, but nowhere more acutely than in the Amazon.

Trees need more water as temperatures rise, but the prolonged droughts have robbed them of moisture, making whole forests easily cleared of trees and turned into farmland

The picture worsens with each round of El Nino, the unusually warm currents in the Pacific Ocean that drive up temperatures and invariably presage (预示) droughts and fires in the rain forest.

These include droughts, floods, windstorms, strong tropical winds and wildfires.