★英語(yǔ)聽力頻道為大家整理的初中英語(yǔ)聽力mp3下載帶原文：多年前一年長(zhǎng)達(dá)400天，供大家參考。更多閱讀請(qǐng)查看本站英語(yǔ)聽力頻道。
Years Ago, The Year Was 400 Days Long 多年前，一年長(zhǎng)達(dá)400天
Don: Yaël, do you notice the days changing length over the course of the year?
東：雅瑤，你有注意到一年中每一天的長(zhǎng)度在改變么？
Yaël: Sure, Don, it stays light later in the summer and gets dark earlier in the winter.
雅瑤：當(dāng)然了，東，夏天白天長(zhǎng)些，冬天天黑得早些。
Don: No, that’s not it. I mean the whole day feels longer.
東：不，我說的不是這件事。我的意思是一整天感覺變長(zhǎng)了些。
Yaël: I’m not sure that’s possible, Don aren’t days always 24 hours long?
雅瑤：我不確定它是不是真的，東，難道一天不總是24個(gè)小時(shí)么？
Earth’s Rotation
地球自轉(zhuǎn)
Well, it actually takes 23 hours, 56 minutes, and 4 seconds for the Earth to rotate on its axis. But in fact the Earth’s rotation is slowing down all the time because of the gravitational pull of the moon.
其實(shí)，實(shí)際上，地球繞地軸自轉(zhuǎn)一周需要23小時(shí)56分零4秒。但實(shí)際上，因?yàn)橛性虑虻娜f(wàn)有引力作用，地球自轉(zhuǎn)一直在變慢。
Does this mean that the days really do feel longer? Nope. The moon slows us down by about two milliseconds a century, so that even 1 million years ago days were only twenty seconds shorter.
這就意味著一天真讓人覺得變長(zhǎng)了？不。每過一個(gè)世紀(jì)，月球使我們慢了2毫秒。因此，即使比起一百萬(wàn)年前的某一天，現(xiàn)在也僅僅慢了20秒。
Would People Notice?
人們會(huì)注意到么？
I doubt I would have noticed that.
我不認(rèn)為我能注意到。
Maybe not a million years ago. But 400 million years ago days were 21 and a half hours long, which you would have noticed.
可能不是一百萬(wàn)年前，而是4億年前的某一天，當(dāng)時(shí)一天長(zhǎng)21.5小時(shí)，這樣你可能就能注意到。
400 Days Per Year
一年400天
What you really would have noticed is that the time it takes the Earth to get around the sun hasn’t changed, so that back then there were 400 days a year.
你真正能意識(shí)到的是：地球繞著太陽(yáng)公轉(zhuǎn)的時(shí)間沒有改變，所以那時(shí)一年有400天。
Scientists have found fossil evidence from tropical corals that existed at that time, and they have about 400 daily growth rings per year. So someone was enjoying all those extra sunny days.
從存活在那時(shí)的熱帶珊瑚中，科學(xué)家已經(jīng)發(fā)現(xiàn)了化石證據(jù)。它們每年大約有400個(gè)生長(zhǎng)日輪。所以過去的人能享受這些多出來的艷陽(yáng)天。
Years Ago, The Year Was 400 Days Long 多年前，一年長(zhǎng)達(dá)400天
Don: Yaël, do you notice the days changing length over the course of the year?
東：雅瑤，你有注意到一年中每一天的長(zhǎng)度在改變么？
Yaël: Sure, Don, it stays light later in the summer and gets dark earlier in the winter.
雅瑤：當(dāng)然了，東，夏天白天長(zhǎng)些，冬天天黑得早些。
Don: No, that’s not it. I mean the whole day feels longer.
東：不，我說的不是這件事。我的意思是一整天感覺變長(zhǎng)了些。
Yaël: I’m not sure that’s possible, Don aren’t days always 24 hours long?
雅瑤：我不確定它是不是真的，東，難道一天不總是24個(gè)小時(shí)么？
Earth’s Rotation
地球自轉(zhuǎn)
Well, it actually takes 23 hours, 56 minutes, and 4 seconds for the Earth to rotate on its axis. But in fact the Earth’s rotation is slowing down all the time because of the gravitational pull of the moon.
其實(shí)，實(shí)際上，地球繞地軸自轉(zhuǎn)一周需要23小時(shí)56分零4秒。但實(shí)際上，因?yàn)橛性虑虻娜f(wàn)有引力作用，地球自轉(zhuǎn)一直在變慢。
Does this mean that the days really do feel longer? Nope. The moon slows us down by about two milliseconds a century, so that even 1 million years ago days were only twenty seconds shorter.
這就意味著一天真讓人覺得變長(zhǎng)了？不。每過一個(gè)世紀(jì)，月球使我們慢了2毫秒。因此，即使比起一百萬(wàn)年前的某一天，現(xiàn)在也僅僅慢了20秒。
Would People Notice?
人們會(huì)注意到么？
I doubt I would have noticed that.
我不認(rèn)為我能注意到。
Maybe not a million years ago. But 400 million years ago days were 21 and a half hours long, which you would have noticed.
可能不是一百萬(wàn)年前，而是4億年前的某一天，當(dāng)時(shí)一天長(zhǎng)21.5小時(shí)，這樣你可能就能注意到。
400 Days Per Year
一年400天
What you really would have noticed is that the time it takes the Earth to get around the sun hasn’t changed, so that back then there were 400 days a year.
你真正能意識(shí)到的是：地球繞著太陽(yáng)公轉(zhuǎn)的時(shí)間沒有改變，所以那時(shí)一年有400天。
Scientists have found fossil evidence from tropical corals that existed at that time, and they have about 400 daily growth rings per year. So someone was enjoying all those extra sunny days.
從存活在那時(shí)的熱帶珊瑚中，科學(xué)家已經(jīng)發(fā)現(xiàn)了化石證據(jù)。它們每年大約有400個(gè)生長(zhǎng)日輪。所以過去的人能享受這些多出來的艷陽(yáng)天。