"A liquid water layer or pocket in contact with the rock, which is deep below Enceladus' surface, will acquire sodium from the rock - essentially leaching the rock," he says.

“这些液体水深藏在土卫二的地壳内部中的岩石中，并逐渐通过过滤作用从岩石内部获得钠元素。”Lunine说。

youdao

Rivers clean themselves quickly when pollution is not too great, so long as the water is moving and in contact with plants, soil and rock.

在污染不太严重时，河水只要是流动的而且能接触植物、土壤、岩石，自身很快就会变清洁。

youdao

“Once you go from football to basketball, the contact doesn’t really bother you, ” says Rock, who didn’t cross over from pigskin to roundball until he got to high school.

岩石说。 他直到高中才把重心从橄榄球转移到篮球。

youdao

However, even if water is injected through pipes, it generally at some point must come in contact heated rock, i.e. leave the pipes.

FORBES: Google Funded Project Confirms Vast Potential for Geothermal Energy

Think about what this advancement has meant just in terms of access to the resources: When drilling into a hydrocarbon bearing formation 100 feet thick, vertical drilling would allow an operator to contact 100 feet of rock, which would limit your potential recovery to whatever oil or gas would flow into that length of pipe.

FORBES: Horizontal Drilling: A Technological Marvel Ignored

They lose contact with their professional networks and struggle with rock-bottom self esteem.

FORBES: Hope For The Long-Term Jobless?