What I'd love to do is take you off and do a number of tests
我想带你去做一些测试
and see just how we compare.
看我们俩比较起来如何
OK, I'm game for that. So, is this a challenge?
好 我加入 这算是一种挑战吗
This is a challenge indeed,
当然是一种挑战
a challenge I suspect I may well lose!
我怀疑我会输得很惨
For a decade, Joe's been eating 1,900 Calories a day.
十年来 乔每天只摄入1900大卡热量
I've averaged around 2,300,
而我平均约2300大卡
quite a few of them donuts and burgers.
其中很多都来自于甜面包圈与汉堡
How much do you think you weigh?
你觉得你有多重
-Probably about 180. -Ooh, more than 180!
-大概82公斤吧 -比那更重
I should be around 134, 135, 136.
我大约有61 62公斤
We just have to move it down one notch.
我们得下调一个刻度
- 134. - Oh, right on.
-61公斤 -刚好
We're both in our 50s, and I really don't think
我们都是五十几岁了 但我一点不觉得
we look like different generations, let alone species.
我们像是两代人 更遑论两个人种了
So how different are we?
那么我们有多大的区别
I just need for you to relax in there. Sit still, no talking.
只需要放松即可 坐好 不要说话

重点解释：

1.a number of 许多；若干（后接可数名词的复数形式）

例句：A number of cables are needed in this project.
这项工程需要大量电缆。

2. a few of 几个；少许；稍有

例句：Only a few of my friends were informed about it.
这件事只有我的几个朋友知道

3.move down 将 ... 移至低处； 将 ... 调到低位

例句：The current strengthened as we moved down the river.
我们顺流而下时，水流更急了。