As the land dried, 随着陆地变干

252. During the period known as the Carboniferous,
     在石炭纪
253. Earth's great land masses merged,
     地球各大♥陆♥合为一体
254. and the supercontinent of Pangaea was born.
     超级大♥陆♥“盘♥古♥大♥陆♥”诞生
255. As the land dried,
     随着陆地变干
256. the vast swamps began to disappear.
     广阔的沼泽开始消失
257. Lacking water, most amphibians struggled.
     由于缺水 多数两栖动物苦苦挣扎
258. But not all.
     但并非全部如此

来自《我们星球上的生命 第一季 第三集 Life on Our Planet S01E03 入侵大地》第 255 行