Because there are reasons to think the clouds on Venus only exist because there's ongoing geological activity.

因为我们有理由认为在金星的云层之所以存在是因为有正在进行的地质活动。

As of yet, Curiosity has not detected any methane—its presence might point to ongoing biological activity on the Red Planet.

截至目前，好奇号还没有探测到任何甲烷气体，甲烷的存在可能能证明火星上存在生物活动。

These electrodes pick up the ongoing brain electrical activity.

这些电极接收正在进行的脑电活动。

So this too suggests ongoing volcanic activity, But although this is intriguing evidence.

所以这也表明正在进行的火山活动，但尽管这是耐人寻味的证据。