原文视听

If you take an organ like the heart,
如果观察心脏你就会发现
which is pumping away to pump the blood around the body,
它是通过跳动来向全身输送血液
it needs a lot of energy, a lot of oxygen delivered to it.
这就需要很多能量和氧气来辅助
If it doesn't get it,
要是不够充足
if it gets starved of oxygen, that can produce a heart attack.
处于缺氧状态 这时就会突发心脏病
We weren't just suffering
我们新形成的饮食结构
the effects of our new diet in our hearts.
岂止会损害到心脏
It was hitting us in the guts, too.
更会损伤内脏
Our bowels were exploding.
我们的肠子越胀越大
It seemed that again the reason was man-made.
看来又是人为造成
Modern flour milling techniques
现代面粉制造技术
removed the fibre from our staple foods.
将主食中的纤维质剔除
Horizon was on hand to explain
地平线栏目已精确剖析过
precisely what this was doing to our digestive systems.
此举对消化系统的影响
The colon isn't just a static tube.
结肠并非只是个静压管
It contracts like an earthworm
它像蚯蚓一样
to force the food residue along.
通过收缩来传输食物残渣
Painter believes that on a low-fibre diet,
佩恩特认为低纤维的饮食
this residue may be stiff like tar
会使食物残渣如沥青般僵硬
so that the very high pressures are built up in the colon.
然后施压于结肠
This can cause a blow-out in
于是肠壁会受到严重挤压变形
the wall of the colon, called a diverticulum.
我们称之为憩室

重点解释

if it gets starved of oxygen, that can produce a heart attack.如果处于缺氧状态 ，这时就会突发心脏病

starve of:(使)因缺乏而受困苦；渴望；(使)丧失

The plant was starved of light and died.

这株植物因为极度缺乏光照而死了。

The department has been starved of resources.

这个部门一直缺少资金。

Modern flour milling techniques removed the fibre from our staple foods.现代面粉制造技术将主食中的纤维质剔除

remove from:除掉, 迁移

It's difficult to remove these chemicalsfrom water.

要从水中清除这些化学物质是困难的。

Horizon was on hand to explain precisely what this was doing to our digestive systems.地平线栏目已精确剖析过此举对消化系统的影响

on hand: 现有

We have nobody on hand to repair your car.

我们现在没有人能修你的车。