評(píng)論
打印
So we’re thinking that albatross could make use of two different kinds of compasses if you will, a magnetic compass and a celestial compass.
所以我們認(rèn)為信天翁能使用兩種不同的羅盤(pán)，一種磁羅盤(pán)和一種天文羅盤(pán)。
The magnetic compass somehow makes use of Earth’s magnetic field, much the way a standard compass does.
磁羅盤(pán)會(huì)以某種方式利用地球的磁場(chǎng)，和一個(gè)標(biāo)準(zhǔn)的羅盤(pán)幾乎一樣。
But to prove this, we would have to find some kind of magnetic sensory organ in birds, and we are not sure that we have.
但是為了證明這一點(diǎn)，我們必須找到鳥(niǎo)身上的某種磁感應(yīng)器官，但我們不確定找到了。
We have found in birds a mineral called magnetite, which we think might be somehow related to this, because magnetite is a natural magnet.
我們?cè)邙B(niǎo)身上找到了一種叫做磁鐵礦的礦物質(zhì)，我們認(rèn)為這也許和磁羅盤(pán)有某種聯(lián)系，因?yàn)榇盆F礦是一種天然的磁鐵。
But the problem is that we’ve also found magnetite in non-migratory birds,
但問(wèn)題是，我們還在其他非遷徙的鳥(niǎo)類(lèi)身上找到了磁鐵礦，
which suggests that it may in fact serve a completely different function, not related to navigation at all.
這說(shuō)明它可能事實(shí)上發(fā)揮著一種完全不同的功能，和航海一點(diǎn)關(guān)系也沒(méi)有。
Um, and the other compass, the celestial compass makes use of the stars, more or less the same way humans have historically used the stars to navigate in the open sea.
另一個(gè)羅盤(pán)，天文羅盤(pán)利用了星星，多多少少和人類(lèi)在歷史上使用星星在遠(yuǎn)海上航行的方法一樣。
So that’s the way we think albatross navigate.
所以我們認(rèn)為這是信天翁導(dǎo)航的方式。
So anyway, you know, think about it, how about if you had to go a thousand miles every time you wanted to get a bite to eat?
不管怎樣，你們可以想想，如果你們每次想吃點(diǎn)什么時(shí)都不得不走一千英里的話(huà)，會(huì)怎么樣？
Yeah, and we complain about having to walk all the way across campus to get to the cafeteria.
是啊，我們連必須一路穿過(guò)校園走到餐廳都抱怨個(gè)不停。
Yeah.
是啊。
