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Dunes of sand hundreds of miles long streak their surface. With no cloak of vegetation to conceal them strange formations are exposed in the naked rock. Africa' s Sahara is the largest desert of all. It' s the size of the United States and the biggest source of sand and dust in the entire world. Sandstorms like these appear without warning and reduce visibility for days over areas the size of Britain. Dromedaries, singlehumped camels, take these storms in their stride. The heavy sand rises only a few metres above the ground, but the dust can be blown 5, 000 metres up into the sky. The ferocious wind, armed with grains of sand, is the agent that shapes all deserts. |
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dà fēng chuī jī chéng de shā qiū cháng dá shù bǎi gōng lǐ, héng gèn zài shā mò de biǎo miàn, méi yǒu zhí bèi zhē yǎn, tā men zài luǒ lù de yán shí zhōng jiān, xíng chéng qí guài de xíng zhuàng, fēi zhōu de sā hā lā shā mò shì, shì jiè shang zuì dà de shā mò, tā de miàn jī jī hū yǔ zhōng guó de miàn jī xiāng dāng, zài zhè lǐ jīng cháng shì kuáng fēng dà zuò, xiàng zhè yàng shā chén bào huì zhòu rán ér qǐ, ràng nǐ zài jǐ tiān shí jiān nèi, zài xiāng dāng yú yīng guó guó tǔ miàn jī de fàn wéi nèi, shén me yě kàn bú jiàn, dān fēng tuó què néng zài zhè yàng de shā chén bào zhōng, xíng zǒu zì rú, jiào dà de shā lì zhǐ néng shàng shēng jī mǐ, dàn shā chén zé kě yǐ bèi chuī fú dào 5 qiān mǐ de gāo kōng suǒ yǒu shā mò de xíng chéng, dōu shì tōng guò jiā guǒ zhe shā chén de kuáng fēng. |