of one of nature's most intimidating events. 发生几率也大大上升

89. So we, too, have to deal with climate change.
    因此我们也必须应对气候的变化
90. Less rainfall and extended droughts allow deserts to grow.
    降雨量的减少与旱期的延长使沙漠区域得以扩张
91. And as they do, so does the likelihood
    与此同时 一种自然中最令人生畏的现象之一的
92. of one of nature's most intimidating events.
    发生几率也大大上升
93. A dust storm.
    沙尘暴
94. A wall of dust up to a mile high,
    一堵近两公里高的由沙尘构筑的墙
95. travelling at almost 70mph.
    速度达到每小时110公里

来自《行星地球 第三季 第三集 Planet Earth S03E03 沙漠与草原》第 92 行