A hot spring is usually formed when water is heated by rocks deep in the earth. (4) If the water becomes hot enough, it boils and forms steam, and the water can shoot into the air.
地下深处的岩石将水变热，通常会形成温泉。如果水变得相当热，便会沸腾，产生蒸汽，而且水可能喷到空中。
A hot spring is usually formed when water is heated by rocks deep in the earth. (4) If the water becomes hot enough, it boils and forms steam, and the water can shoot into the air.
地下深处的岩石将水变热，通常会形成温泉。如果水变得相当热，便会沸腾，产生蒸汽，而且水可能喷到空中。
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