I could feel that one going through.
我都感觉到它的牙齿了
Should've had the double glove.
你应该带双层手套的
I learned the hard way!
我也是吃过苦头才知道的
The big mouse already has a 50% chance of being dead.
这只大老鼠已经有50%死亡的可能
OK, so he's doing well to be alive?
它还活得挺好的
He's lucky to be alive, that's right.
很幸运它能活到现在
- The small one probably has another year to go. - Oh, right.
-而这只小的还有一年的寿命 -好的
The little guy will live
这只小家伙能活到
on to the equivalent of what, 120 in human?
按人类的年龄来算的话 120岁吗
Exactly, yeah.
是的
Another 30 to 40 years in human years.
折算成人的话 它还有三四十年的寿命
- Can I pick it up? - Go ahead.
-我能把它抓起来吗 -抓吧
- By the tail. - OK.
-抓尾巴 -好的
The little mouse I'm holding
我现在抓住的这只小鼠
is actually a man-made creation.
其实是基因改造的产物
The reason he's so small and so long lived
它之所以如此瘦小和长寿
is because he's been genetically engineered.
是因为它的基因被改变了
He has incredibly low levels of a growth hormone
它体内的生长激素 也就是
called Insulin-like Growth Factor 1.
类胰岛素一号生长因子的水平非常低
And it seems IGF-1 is a key factor
看来类胰岛素一号生长因子是
linking calorie restriction and longevity.
将低热量饮食和长寿联在一起的主要因素

重点解释：

1.go through 经历；浏览

例句：He thought it his duty to go through the papers.
他认为自己有责任检查这些文件。

2.be lucky to幸运地

例句：You're very lucky to be alive after that accident.
你大难不死可真幸运。

3.pick up 捡起

例句：He picked up his knife and fork.
他捡起了刀叉。