Throughout history, volcanoes have been one of the greatest agents of change. 纵观历史 火山一直是最大的变化因素之一

146. Earth never remains stable for long.
     地球从不会长♥期♥保持稳定
147. Sometimes that helps life.
     有时候这有助于生命
148. Sometimes it hinders it.
     有时候阻碍生命
149. Throughout history, volcanoes have been one of the greatest agents of change.
     纵观历史 火山一直是最大的变化因素之一
150. Eruptions lasting thousands of years
     持续数千年的喷发
151. have repeatedly engulfed vast swathes of our planet.
     反复地吞没地球上的广阔区域
152. Pumping gases into the atmosphere,
     向大气中排放气体

来自《我们星球上的生命 第一季 第一集 Life on Our Planet S01E01 生命法则》第 149 行