| Normally it takes four weeks for hoppers to become adults, but when the conditions are right as now their development switches to the fast track. As the vegetation in one place begins to run out the winged adults release pheromones - scent messages, which tell others in the group that they must move on. And when groups merge, they form a swarm. An adult locust eats its entire body weight every day, and a whole swarm can consume literally hundreds of tonnes of vegetation. They have to keep on moving. Swarm travels with the wind. It's the most energy-saving way of flying. | |
| 通常一只若虫需要经过4周才能变为成虫，但如果条件适宜，比如像现在，它们的生长速度会加快。一个地方的植物吃光之后，长翅膀的成虫会释放信息素，用味道告诉同伴说必须离开了。集中在一起之后，它们就形成蝗虫群，一只成年蝗虫每天的食量相当于自己的体重。一个蝗虫群每天可以吃掉几吨植物，它们必须不断迁移。蝗虫随着风迁移，这是最省力的飞行方式。 |
| Normally it takes four weeks for hoppers to become adults, but when the conditions are right as now their development switches to the fast track. As the vegetation in one place begins to run out the winged adults release pheromones scent messages, which tell others in the group that they must move on. And when groups merge, they form a swarm. An adult locust eats its entire body weight every day, and a whole swarm can consume literally hundreds of tonnes of vegetation. They have to keep on moving. Swarm travels with the wind. It' s the most energysaving way of flying. | |
| tong chang yi zhi ruo chong xu yao jing guo 4 zhou cai neng bian wei cheng chong, dan ru guo tiao jian shi yi, bi ru xiang xian zai, ta men de sheng zhang su du hui jia kuai. yi ge di fang de zhi wu chi guang zhi hou, zhang chi bang de cheng chong hui shi fang xin xi su, yong wei dao gao su tong ban shuo bi xu li kai le. ji zhong zai yi qi zhi hou, ta men jiu xing cheng huang chong qun, yi zhi cheng nian huang chong mei tian de shi liang xiang dang yu zi ji de ti zhong. yi ge huang chong qun mei tian ke yi chi diao ji dun zhi wu, ta men bi xu bu duan qian yi. huang chong sui zhe feng qian yi, zhe shi zui sheng li de fei xing fang shi. |
| Normally it takes four weeks for hoppers to become adults, but when the conditions are right as now their development switches to the fast track. As the vegetation in one place begins to run out the winged adults release pheromones scent messages, which tell others in the group that they must move on. And when groups merge, they form a swarm. An adult locust eats its entire body weight every day, and a whole swarm can consume literally hundreds of tonnes of vegetation. They have to keep on moving. Swarm travels with the wind. It' s the most energysaving way of flying. | |
| tōng cháng yì zhī ruò chóng xū yào jīng guò 4 zhōu cái néng biàn wéi chéng chóng, dàn rú guǒ tiáo jiàn shì yí, bǐ rú xiàng xiàn zài, tā men de shēng zhǎng sù dù huì jiā kuài. yí gè dì fāng de zhí wù chī guāng zhī hòu, zhǎng chì bǎng de chéng chóng huì shì fàng xìn xī sù, yòng wèi dào gào sù tóng bàn shuō bì xū lí kāi le. jí zhōng zài yì qǐ zhī hòu, tā men jiù xíng chéng huáng chóng qún, yì zhī chéng nián huáng chóng měi tiān de shí liàng xiāng dāng yú zì jǐ de tǐ zhòng. yí gè huáng chóng qún měi tiān kě yǐ chī diào jǐ dūn zhí wù, tā men bì xū bù duàn qiān yí. huáng chóng suí zhe fēng qiān yí, zhè shì zuì shěng lì de fēi xíng fāng shì. |
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