They were almost knee-deep when they realized it was a hot spring。

当他们意识到这是一个温泉时，水已齐膝深了。

youdao

They were almost knee-deep when they realized it was a hot spring.

他们意识到这是一个温泉的时候，水已经齐膝深了。

youdao

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。

youdao

There are warnings that spring in this part of the southern hemisphere is likely to bring more hot weather, exacerbating a long drought.

VOA: standard.2009.09.03

Cooling down in the lake, and then watching the sun setting over the dunes while soaking in a hot spring is a surreal experience.

BBC: Siwa: An Egyptian oasis

Once over the top of a high dune, you come to a hot spring, the size of a large jacuzzi, where sulphurous water bubbles in a pool and runs off to irrigate a garden.

BBC: Siwa: An Egyptian oasis

In traditional geothermal energy, engineers drill near a geyser, hot spring or volcano, stick a valve and turbine on the hot water, and that's pretty much it.

FORBES: Magazine Article