Once airborne, the locusts can travel over 60 miles a day 一旦上天 蝗虫每天可以飞行九十六公里

121. they do so three times faster than normal.
     它们发育的速度达到平时的三倍
122. Now they are at their most voracious...
     现在到了食欲最旺盛的时候
123. and with wings, they can take to the skies.
     有了翅膀 它们就能飞行
124. Once airborne, the locusts can travel over 60 miles a day
     一旦上天 蝗虫每天可以飞行九十六公里
125. in their search for new feeding grounds.
     去寻找新的觅食区
126. A super swarm of this scale may only appear once in a decade.
     如此大规模的超级蝗群也许十年才出现一次
127. This one extends over 200 square miles
     这个蝗群遍布五百一十八平方公里

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 124 行