Mother comes to the rescue once more. 妈妈再次前来救助
Once alarmed, most insects stay put. 一旦警觉起来 大多数昆虫会静止不动
But, ultimately, once the water recedes, there will be new life, 但等到水位降低 便会有新生命来临
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
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
Once again, the pride must continue their search. 狮群必须再次踏上寻找食物的征程