Thanks to a hot spring almost 40m below ground, the temperature of the lake never dips below 23C.
得益于地下40米深处的温泉，即使在冬天，湖水的温度也从未低于23摄氏度。
2
The beauties of the West Lake in spring were beyond his expectation.
西湖的春景要比他所预想的更加美丽。
《新英汉大辞典》
3
This image from April 2010 is the latest update in the Earth Observatory’s feature World of Change: Water Levels in Lake Powell, which documents changes in lake levels each spring since 1999.