translation.en: And at that time two years ago I mentioned that we were speculating that these jets might in fact be geysers, or chambers of liquid water underneath the surface, but we weren't really sure.
translation.zh: 而且两年前 当时我说我们推测 这些喷射流可能实际上是 从充满液态水的地面凹陷处 或者地表以下的腔室中喷射出来的间歇泉 但是我们那时候无法确定。