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视频出处：
本影片片段来自《非洲》
Down here there are animals, too, that seek out the sunlight.
在这下面也有些动物 是喜光的
The forest's largest predator.
森林中最大的掠食者
A female rock python.
一条雌岩蟒
Her body is five metres long,
她的身体长达5米
weighs 100 kilos and has 4,000 muscles
重达100公斤 有着4000块肌肉
that she uses to crush the life out of her victims.
用来碾碎她的猎物
But right now, her need is not for food. It's for warmth.
但是现在 她需要的不是食物而是温暖
She finds a rare patch
她发现了一小块地
where a shaft of sunlight strikes the ground
只见一缕阳光撒到地面上
and she begins to bask.
她开始晒日光浴了
She's cold-blooded,
蛇是冷血动物
so this is the only way she can raise the temperature of her body.
所以这是她提高体温的唯一方法
But now she's becoming very warm indeed,
可是现在 她的身体已经非常暖和了
more than ten degrees hotter than usual.
甚至比平常高出十几度
At 40 degrees centigrade, she's in danger of killing herself.
如果体温达到40度 就有死亡的危险
Just in time, she moves off.
于是她及时离开
