原文视听

The potato pieces are still there,
马铃薯碎片仍然存在
essentially, just sitting in the digestive juices.
本质上来说 只是被浸在消化液中
It would then pass into our colon
接下来它会经过我们的结肠
and would, effectively, sit in the colon
然后留在结肠里
and would just not be digested and would give us serious tummy ache.
不被消化 会造成严重的腹痛
Then he sees whether the mechanical gut fares any better
接下来他要研究机械内脏能否更好地处理
with the cooked potato.
烹煮过的马铃薯
With the raw potato,
当实验对象是生马铃薯时
we saw the pieces were coming out almost as they went in.
我们看到马铃薯碎片从始至终几乎没有变化
With the cooked potato because we've got a less rigid structure,
应对熟马铃薯时 因为它的结构已不再坚固
we can start to digest it and release all the nutrients out.
于是我们开始消化它 使之释放出全部营养
This time, the gut has indeed reduced the cooked potato to a pulp.
这一次 模拟内脏确实使熟马铃薯成为了浆液
But to discover what advantages cooking might have for the body,
为了研究烹煮对身体的益处
Martin wants to test
马丁要测定
how much energy the digestive system has released from the potatoes.
消化系统从马铃薯里获得的能量总量
He adds a reagent to the raw potato marked with an R
他向生马铃薯中加入一种试剂 标记为R
and to the cooked potato, marked with a C.
也向熟马铃薯中加入这种试剂 标记为C

重点解释

It would then pass into our colon接下来它会经过我们的结肠

pass into进入

The gases pass into the exhaust manifold.

这些废气进入排气歧管。

we can start to digest it and release all the nutrients out.于是我们开始消化它，使之释放出全部营养

release to把 ... 释放给 ...； 向 ... 发行

The company issued a press release to try to stop speculationin its shares.

公司发布了新闻稿以期遏止对其股票的投机活动。

He adds a reagent to the raw potato marked with an R他向生马铃薯中加入一种试剂，标记为R

add to增加

I have nothing to add to my earlier statement.

我对我先前说的话，没有什么补充的。

I didn't want to add to Mother's misery.

我不愿意增加母亲的痛苦。