- As the vegetation in one place begins to run out
当一个地方的植物即将吃光时 - the winged adults release pheromones - scent messages,
长着翅膀的成虫便释放出信息素 即一些气味信号 - which tell others in the group that they must move on.
提醒蝗群中的其它成员它们应该动身了 - And when groups merge,
蝗群合并之后 - they form a swarm.
形成了一团蝗虫云 - An adult locust eats its entire body weight every day,
成虫每天的进食量相当于自己的体重 - and a whole swarm can consume literally hundreds of tonnes of vegetation.
而整团蝗虫云能消耗掉数百吨植物
And when groups merge, 蝗群合并之后
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