Now they are at their most voracious... 现在到了食欲最旺盛的时候

119. The locusts now transform into winged adults,
     蝗虫现在转变成了有翅的成虫
120. and with conditions as good as this,
     由于生长环境良好
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

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 122 行