這些事兒聽起來都不像真的

生活很奇妙，在我們身邊就有許多真事讓人難以置信。舉個例子，你知道在金星上一天比一年都長么，你知道有些動物出生時就懷孕了么?下面我們就介紹7個怪異的事實，聽起來都不像是真的。

1. There's a species of shark that can live for around 500 years.

1.有一種鯊魚可以活到將近500歲。

The Greenland Shark has the longest lifespan of all known vertebrates, living an average of 272 years, and some of them can live to be around 500 years old.

格陵蘭鯊是世界上已知的最長壽的脊椎動物，它們的平均壽命有272歲，其中有些甚至會活到500歲左右。

2. Human children don't get kneecap bones until they're around three years old.

2.人類到三歲膝蓋骨才會長成。

It takes a while for children to get kneecaps. That part of the skeleton is called the patella. It starts out as cartilage and then ossifies into bone at around toddler age.

小孩膝蓋前端的骨頭要一段時間才能長成。這個部分我們叫它膝蓋骨。它在一開始只是軟骨組織，在學習走路的那段時間才會逐漸骨化，形成骨頭。

3. Aphids give birth to other pregnant aphids.

3.蚜蟲會生出懷孕的蚜蟲。

Aphids are a common garden insect. Most of them are born pregnant and don't need men.

蚜蟲是一種常見的園林害蟲。它們大多數(shù)都是無性生殖，出生時就是懷孕的。

"Most aphids are born pregnant and beget females without wastrel males," the US National Library of Medicine says. "Embryos complete development within the mother’s ovary one after another, in assembly line fashion. These developing embryos contain developing embryos of the third generation within them, like Russian dolls."

美國國家醫(yī)學博物館說：“大多數(shù)蚜蟲一出生就是懷孕的，這些蚜蟲產出的幼蟲都是雌性。胚胎在卵巢內流水線一樣一個個長成，這些長成的幼蟲體內就帶有下一代幼蟲胚胎，就像俄羅斯套娃一樣。”

Once a year, aphids have sex. The weather induces another "form" for the animal, which produces eggs rather than embryos. Males are also produced asexually.

蚜蟲每年會進行一次交配。受季節(jié)影響，蚜蟲會繁殖出另一種產卵類型的幼蟲，還會無性繁殖出雄性幼蟲。

4. A bear that fought with Poland in World War II was promoted to the rank of a corporal.

4.一只在二戰(zhàn)期間與波蘭士兵并肩戰(zhàn)斗的熊擁有下士軍銜。

Wojtek the Soldier Bear was released from the prison camps of Siberia only to be picked up in Iran by Allied forces. A Polish army looked after him, and he helped out with the war effort, moving ammunition during the Battle of Monte Cassino in Italy.

佛伊泰克熊士兵是從西伯利亞戰(zhàn)俘集中營釋放出來的，盟軍在伊朗把它撿了回來。一支波蘭部隊照顧這只熊。這只熊在意大利蒙特卡西諾戰(zhàn)役期間幫助部隊運送彈藥。

Following the battle, he was promoted to the rank of a corporal. And after the Allies won World War II, he moved to Britain and lived in the Edinburgh Zoo until his death in 1963.

戰(zhàn)爭中，軍隊授予它下士軍銜。在第二次世界大戰(zhàn)盟軍勝利后，人們把這只熊送往英國，它在愛丁堡公園度過了余生，直到1963年去世。

5. There are more trees on earth than there are stars in the galaxy.

5.地球上的樹比銀河系的星星還多。

NASA estimates that there are between 100 billion and 400 billion stars in the Milky Way galaxy. And according to a paper in Nature, there are more than 3 trillion trees on Earth.

據(jù)美國宇航局估計，銀河系有1000億到4000億顆左右的星星。而根據(jù)《自然》雜志中的論文所述，地球上的樹木有超過3萬億棵。

6. Honey never expires.

6.蜂蜜永遠不會過期。

Honey has a perfect chemical composition that makes it never spoil. Organisms can't live inside it, meaning there's nothing that can spoil in the first place. 5,000-year-old honey has been found and, in theory, is perfectly edible.

蜂蜜的完美化學組成成分讓其永遠都不會變質。微生物根本不能在蜂蜜里存活，這意味著腐壞根本就沒法開始。人們找到了5000年前的蜂蜜，理論上來說它是完全可以食用的。

7. A day on Venus is longer than a year on Venus.

7.在金星上一天比一年都長。

To puzzle this out, remember that one day is how long it takes for a planet to rotate on its own axis, and one year is how long it takes for a planet to rotate around the sun. Venus takes about 243 Earth Days to spin around just once (and in the opposite direction as the Earth, by the way) and 225 Earth Days to go around the sun. So a day is longer than a year.

要想弄清楚這個問題，就要記住，一天是星球自轉一周的時間，而一年是星球圍繞太陽公轉一周的時間。金星需要243個地球日才能自轉一周(順便說一下，它的旋轉方向與地球相反)，而繞太陽一周需要225個地球日。所以在金星上一天比一年長。