Every 21 days, SWAT will survey almost 600,000 miles of global rivers at least twice, aiding drought forecasters and hazardous flood preparations, officials said.

官员们表示，每 21 天，SWAT 将至少对近 600,000 英里的全球河流进行两次调查，以协助干旱预报员和危险的洪水准备工作。