| The crocodile's jaws snap tight like a steel trap - once they have a hold, they never let go. It took over an hour to drown this full-grown bull. To surprise their prey crocodiles must strike with lightning speed. Here, only the narrowest line separates life from death. Most rivers drain into the sea, but some end their journey in vast lakes. Worldwide lakes hold 20 times more fresh water than all the rivers. The East African Rift Valley holds three of the world's largest: Malawi, Tanganyika, and Victoria. Lake Malawi, the smallest of the three, is still bigger than Wales. Its tropical waters teem with more fish species than any other lake. There are 850 different cichlids alone, all of which evolved from just one single ancestor isolated here thousands of years ago. | |
| 鳄鱼的颌骨像钢钳一样结实。它们一旦咬住就绝不放松。它花了一个多小时把这只成年雄角马拖入水中溺死。为了突袭猎物，鳄鱼的速度必须快如闪电。此时生与死只在毫厘之间。绝大多数河流都汇入大海，但也有一些河流在大湖里结束它们的旅程。从全世界范围来说，湖泊中蓄积的淡水量是河流的20倍。世界最大的湖泊中，东非大裂谷地区就有三个，它们是马拉维湖，坦噶尼喀湖和维多利亚湖。马拉维湖是三个湖中最小的一个，但它的面积比威尔士还要大。 这座热带湖中的鱼类是世界所有湖泊中最多的。单是丽鱼科鱼类就有850种，它们是从成千上万年前这里的单一祖先独立进化而来的。 |
| The crocodile' s jaws snap tight like a steel trap once they have a hold, they never let go. It took over an hour to drown this fullgrown bull. To surprise their prey crocodiles must strike with lightning speed. Here, only the narrowest line separates life from death. Most rivers drain into the sea, but some end their journey in vast lakes. Worldwide lakes hold 20 times more fresh water than all the rivers. The East African Rift Valley holds three of the world' s largest: Malawi, Tanganyika, and Victoria. Lake Malawi, the smallest of the three, is still bigger than Wales. Its tropical waters teem with more fish species than any other lake. There are 850 different cichlids alone, all of which evolved from just one single ancestor isolated here thousands of years ago. | |
| e yu de he gu xiang gang qian yi yang jie shi. ta men yi dan yao zhu jiu jue bu fang song. ta hua le yi ge duo xiao shi ba zhe zhi cheng nian xiong jiao ma tuo ru shui zhong ni si. wei le tu xi lie wu, e yu de su du bi xu kuai ru shan dian. ci shi sheng yu si zhi zai hao li zhi jian. jue da duo shu he liu dou hui ru da hai, dan ye you yi xie he liu zai da hu li jie shu ta men de lv cheng. cong quan shi jie fan wei lai shuo, hu po zhong xu ji de dan shui liang shi he liu de 20 bei. shi jie zui da de hu po zhong, dong fei da lie gu di qu jiu you san ge, ta men shi ma la wei hu, tan ga ni ka hu he wei duo li ya hu. ma la wei hu shi san ge hu zhong zui xiao de yi ge, dan ta de mian ji bi wei er shi hai yao da. zhe zuo re dai hu zhong de yu lei shi shi jie suo you hu po zhong zui duo de. dan shi li yu ke yu lei jiu you 850 zhong, ta men shi cong cheng qian shang wan nian qian zhe li de dan yi zu xian du li jin hua er lai de. |
| The crocodile' s jaws snap tight like a steel trap once they have a hold, they never let go. It took over an hour to drown this fullgrown bull. To surprise their prey crocodiles must strike with lightning speed. Here, only the narrowest line separates life from death. Most rivers drain into the sea, but some end their journey in vast lakes. Worldwide lakes hold 20 times more fresh water than all the rivers. The East African Rift Valley holds three of the world' s largest: Malawi, Tanganyika, and Victoria. Lake Malawi, the smallest of the three, is still bigger than Wales. Its tropical waters teem with more fish species than any other lake. There are 850 different cichlids alone, all of which evolved from just one single ancestor isolated here thousands of years ago. | |
| è yú de hé gǔ xiàng gāng qián yí yàng jiē shi. tā men yī dàn yǎo zhù jiù jué bù fàng sōng. tā huā le yí gè duō xiǎo shí bǎ zhè zhǐ chéng nián xióng jiǎo mǎ tuō rù shuǐ zhōng nì sǐ. wèi le tū xí liè wù, è yú de sù dù bì xū kuài rú shǎn diàn. cǐ shí shēng yǔ sǐ zhī zài háo lí zhī jiān. jué dà duō shù hé liú dōu huì rù dà hǎi, dàn yě yǒu yī xiē hé liú zài dà hú lǐ jié shù tā men de lǚ chéng. cóng quán shì jiè fàn wéi lái shuō, hú pō zhōng xù jī de dàn shuǐ liàng shì hé liú de 20 bèi. shì jiè zuì dà de hú pō zhōng, dōng fēi dà liè gǔ dì qū jiù yǒu sān ge, tā men shì mǎ lā wéi hú, tǎn gá ní kā hú hé wéi duō lì yà hú. mǎ lā wéi hú shì sān ge hú zhōng zuì xiǎo de yí gè, dàn tā de miàn jī bǐ wēi ěr shì hái yào dà. zhè zuò rè dài hú zhōng de yú lèi shì shì jiè suǒ yǒu hú pō zhōng zuì duō de. dān shì lì yú kē yú lèi jiù yǒu 850 zhǒng, tā men shì cóng chéng qiān shàng wàn nián qián zhè lǐ de dān yī zǔ xiān dú lì jìn huà ér lái de. |
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