| 歌曲 | BBC新闻100篇 News Item 70 |
| 歌手 | 英语听力 |
| 专辑 | BBC新闻100篇 |
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| [00:00.00] | Pythons, bats and giant armadillos are |
| [00:02.88] | among the longest sleepers at over 18 hours a day. |
| [00:05.78] | Human babies need 16 hours, |
| [00:08.13] | and most of us probably feel |
| [00:10.16] | we need around eight hours sleep to function well. |
| [00:11.99] | Professor Jerry Seigel from the University of California, |
| [00:15.04] | Los Angeles, conducted a study of the sleep times |
| [00:17.79] | of a broad range of animals |
| [00:19.12] | and found that they vary widely. |
| [00:20.95] | Some, like migrating birds, |
| [00:22.98] | can survive long periods without sleeping at all. |
| [00:25.63] | He believes that shows sleep evolved to conserve energy: |
| [00:30.00] | "It's animals that are needlessly active that will not survive, |
| [00:34.54] | but animals that are most efficient |
| [00:36.67] | and use their waking time to do vital functions, |
| [00:40.90] | and are otherwise asleep that will survive." |
| [00:43.85] | Sleep helps make best use of limited resources. |
| [00:46.95] | In humans, when we're awake, |
| [00:49.14] | our brain accounts for 20% of the energy |
| [00:51.59] | we use when just sitting around. |
| [00:53.05] | Sleeping also makes us less likely to get injured |
| [00:55.86] | and less likely to be detected by predators. |
| [00:00.00] | jù mǎng, biān fú hé jù xíng qiú yú |
| [00:02.88] | yì tiān shuì mián de shí jiān chāo guò 18 xiǎo shí |
| [00:05.78] | rén lèi yīng ér xū yào 16 xiǎo shí de shuì mián |
| [00:08.13] | dà bù fèn rén kě néng rèn wéi |
| [00:10.16] | wǒ men xū yào dà yuē 8 xiǎo shí de shuì mián lái bǎo chí shēn tǐ gōng néng de yùn zuò |
| [00:11.99] | lái zì jiā zhōu dà xué de Jerry Seigel jiào shòu |
| [00:15.04] | shì luò shān jī fēn xiào, jìn xíng le yí gè shuì mián shí jiān de yán jiū |
| [00:17.79] | zhè gè yán jiū shè jí dào dà bù fèn dòng wù |
| [00:19.12] | fā xiàn jié guǒ xiāng chà fēi cháng dà |
| [00:20.95] | yī xiē bǐ rú qiān xǐ de niǎo lèi |
| [00:22.98] | kě yǐ zài bù shuì mián de qíng kuàng xià shēng cún hěn zhǎng yī duàn shí jiān |
| [00:25.63] | tā xiāng xìn zhè biǎo míng shuì mián yǎn biàn chéng le jié yuē néng liàng |
| [00:30.00] | jī hū bù yùn dòng de dòng wù jiāng wú fǎ shēng cún |
| [00:34.54] | dàn shì dòng wù shì zuì yǒu xiào lǜ de |
| [00:36.67] | lì yòng tā men xíng dòng de shí jiān jìn xíng zhòng yào de gōng néng yùn zuò |
| [00:40.90] | zhè yàng dāng tā men jìn xíng shuì mián shí cái néng gòu shēng cún |
| [00:43.85] | shuì mián néng gòu bāng zhù zuì hǎo dì lì yòng yǒu xiàn de zī yuán |
| [00:46.95] | zuò wéi rén lèi, dāng wǒ men xǐng zhe shí |
| [00:49.14] | wǒ men de dà nǎo zhàn néng liàng de bǎi fēn zhī 20 |
| [00:51.59] | ér shǐ yòng zhè bù fèn néng liàng shí zhǐ shì wú suǒ shì shì |
| [00:53.05] | shuì mián tóng yàng shǐ wǒ men shòu shāng de jī lǜ jiàng dī |
| [00:55.86] | jiǎn shǎo bèi bǔ shí zhě gōng jī de jī lǜ |