Since lake levels are controlled by rates of evaporation as well as by precipitation, the interpretation of such levels is ambiguous.

由于湖泊水位是由蒸发率和降水量控制的，对这种水位的解释是模糊不清的。

youdao

The fact that lake levels in the semiarid southwestern United States appear to have been higher during the last ice age than they are now was at one time attributed to increased precipitation.

美国西南部半干旱地区的湖泊水位在上一个冰河时代似乎比现在更高，这一事实曾一度归因于降水增加。

youdao

Reductions in lake levels here seem to driven by reductions in rainfall rather than increased evaporation.

这里看到的湖泊水位下降似乎是由降雨量下降造成的，而不是由越发增多的蒸发造成的。

youdao

Storms come and go, lake levels rise and fall, but all obey lord gravity.

NPR: Defying Gravity, and Odds, in New Orleans

Lake levels have been below average for at least 13 years, said Keith Kompoltowicz, chief of watershed hydrology for the U.S. Army Corps of Engineers in Detroit.

CNN: New water lows for Great Lakes could drain local economies

The project is intended to give the authorities the ability to draw water from the Colorado River for the Las Vegas area and guard against water quality issues that are associated with continually dropping lake levels.

CNN: STORY HIGHLIGHTS