说这些化学物质表明地下水流到火山口表层后产生了矿床，然后才又渗透到了地下。

Squyres says the chemicals suggest the mineral deposits remained after ground water came to the surface of the crater floor and then seeped back into the ground.

youdao

说这些化学物质表明地下水流到火山口表层后产生了矿床，然后才又渗透到了地下。

Squyres says the chemicals suggest the mineral deposits remained after ground water came to the surface of the crater floor and then seeped back into the ground.

youdao