- in their search for new feeding grounds.
去寻找新的觅食区 - 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 - This one extends over 200 square miles
这个蝗群遍布五百一十八平方公里 - and contains several billion individuals.
共有数十亿只蝗虫 - Between them, they will devour 40,000 tonnes of food in a day.
每天能吃掉四万吨食物 - Nothing can strip a land of its vegetation with such speed
蝗灾吞噬植被的速度和彻底性 - and thoroughness as a plague of locusts.
没有任何事物能与之比肩