The biggest insect emergence on the planet is underway. 地球上最大规模的昆虫羽化就要开始了
They invade the upper branches, where they climb out of their external skeletons and assume their adult winged form. 占据上端的树枝后 若虫开始进行转变到蝉的蜕皮动作
The nymphs of the periodical cicada have been biding their time. 布鲁德X蝉(一种周期蝉)的若虫 为这个机会等待了很长时间
Now they march like zombies towards the nearest tree, and start to climb. 现在它们如朝圣般向最近的树进军 并开始攀爬
but soon, more than a billion swarm all over the forest. 马上,10亿只若虫爬满了整个森林
and the forest pool is almost a mile away. 林中的池塘还有1英里远呢
By June the days are at their longest 6月是白昼最长的时候
and all across the northern hemisphere the broad leaves are hard at work. 所有北半球的阔叶树木努力生长
and when it's time for everyone to leave she leads the way. 她正在带着所有的宝宝们离开巢穴