...a seemingly unstoppable barrier... 似乎坚不可摧的屏障

142. The only thing stopping the water from flooding the land to the west
     阻止水流向西淹没陆地的
143. was a towering wall of ice.
     只有一堵高耸的冰墙
144. On the far side, the wall was almost a kilometer high...
     在远端 这堵墙有近1000米高
145. ...a seemingly unstoppable barrier...
     似乎坚不可摧的屏障
146. but not for much longer.
     但坚持不了多久
147. As temperatures kept rising and the meltwater lake kept growing,
     随着温度不断升高 融水湖不断扩大
148. the pressure from behind increased.
     来自后方的压力增加

来自《我们星球上的生命 第一季 第八集 Life on Our Planet S01E08 冰与火的世纪》第 145 行