The surface is heavily cratered, and there's no indication of any volcanoes or tectonic activity.

其地表也布满了陨坑，但没有任何火山或地质活动的迹象。

It's located in an area of high tectonic and volcanic activity known as the " Pacific Ring of Fire" .

它位于火山活动频繁的地区，被称为“太平洋火山带”。

Namely, it was also a time of massive tectonic activity.

也就是说，这也是一个大规模构造活动的时期。

The rock layer could also be weakened by tectonic activity.

岩石层也可能因构造活动而减弱。

Unlike most tsunamis that are triggered by tectonic activity, megatsunamis are caused by sudden impact.

与大多数由构造活动引发的海啸不同，巨型海啸是由突然的撞击引起的。

Because Mars is smaller than Earth, it cooled faster, and therefore it lost the internal heat that drives tectonic activity.

因为火星比地球小，所以它的冷却速度更快，因此它失去了驱动构造活动的内部热量。

But Earth's weather and tectonic activity have erased most of our planet's impact scars… has that given us a false sense of safety?

但是地球的天气和构造活动已经消除了我们星球的大部分撞击伤痕… … 这是否给了我们一种错误的安全感？