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(单词翻译:双击或拖选)
-Can I touch them?-Yeah.
-Will they peck me?
-They’ll peck at your rings.
-They really?
-And they’ll try to take them off if they’re gonna get hold. But they are not very strong at pecking.
-I want to feel your feathers. Now this might be what a dinosaur1 felt like to touch. That's really soft and lovely.
-Oh, I'm stroking dinosaurs3. Yeah, get it off me. I think they too little like dinosaurs especially when you know that some dinosaurs were actually feathered.
-They certainly do. And those feathers are quite primitive4 and they structure a lot like some of the fossil feathers we find.
The similarities aren't just on the surface. We can get a much better understanding of ancient dinosaurs by looking at the anatomy5 of their modern relatives in depth. And a local farm has recently had to put down one of its ostriches6. As an anatomist, I'm very used to dissecting7 cadavers8.
-You know, I don't usually wear Wellington boots when I do dissecting. But this will be the first time that I'd ever dissected9 a bird, or for that matter, the descendant of a dinosaur. Why don't you talk me through the anatomy that we can see on the surface?
-That's a heel, the ankle joints10. But birds walk with that, clear the ground, just like their dinosaur and ancestors did.
-And Really? Just two toes? And one main one?
-The middle toe is their dominant11 toe, just like, you know, a dinosaur, the third toe is the major toe of the foot.
And there are other similarities to their ancient relatives.
-I don't know if you can see this. But here is the tip of wing, right here. And there’s a lovely little claw coming of it.
But the real clues about dinosaurs come from seeing what the relationship is between a bird's muscles and its bones.
-Right away we can see some of the fine muscles here. You can see this lovely, red colour, beautiful beefy muscle.
-So based on dissections like this, how accurately14 do you think you can reconstruct the musculature of extinct dinosaurs?
-You can look at any bone and tell something about the soft tissue anatomy of the animal, from the scars, as they’re called, the muscle scars like ligament and tendon scars on the bones that are attachment15 points for all these things that we see here as soft tissue.
点击收听单词发音
1 dinosaur | |
n.恐龙 | |
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2 cuddly | |
adj.抱着很舒服的,可爱的 | |
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3 dinosaurs | |
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西 | |
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4 primitive | |
adj.原始的;简单的;n.原(始)人,原始事物 | |
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5 anatomy | |
n.解剖学,解剖;功能,结构,组织 | |
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6 ostriches | |
n.鸵鸟( ostrich的名词复数 );逃避现实的人,不愿正视现实者 | |
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7 dissecting | |
v.解剖(动物等)( dissect的现在分词 );仔细分析或研究 | |
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8 cadavers | |
n.尸体( cadaver的名词复数 ) | |
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9 dissected | |
adj.切开的,分割的,(叶子)多裂的v.解剖(动物等)( dissect的过去式和过去分词 );仔细分析或研究 | |
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10 joints | |
接头( joint的名词复数 ); 关节; 公共场所(尤指价格低廉的饮食和娱乐场所) (非正式); 一块烤肉 (英式英语) | |
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11 dominant | |
adj.支配的,统治的;占优势的;显性的;n.主因,要素,主要的人(或物);显性基因 | |
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12 digits | |
n.数字( digit的名词复数 );手指,足趾 | |
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13 relic | |
n.神圣的遗物,遗迹,纪念物 | |
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14 accurately | |
adv.准确地,精确地 | |
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15 attachment | |
n.附属物,附件;依恋;依附 | |
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