纪录片《熟食造就了人类吗》 第45期：触觉与脂肪口感有关

So the first fat level is 5% fat,

首先是含脂量5%

which is very similar to whole milk,

跟全脂奶差不多

and we get very low brain response to that concentration of fat level.

脑部对该浓度的脂肪做出的反应很小

The scan reveals his brain hardly responds.

扫描显示他的脑部几乎没有反应

But then he's given the 10%-fat drink.

然后是含脂10%的饮料

The next level is the 10% fat,

下面含脂量是10%

which is very much like single cream.

跟淡奶油差不多

And we're seeing, at this level,

我们可以看到该含量下

the taste areas of the brain respond to the fat.

脑部的味觉区对脂肪作出了反应

This time, much more of the brain lights up.

这次脑部更多的区域显示了出来

Now the 30%-fat drink is administered.

现在含脂30%的饮料要上场了

And it's what happens next which is so surprising.

显示结果 令人大吃一惊

The highest level of fat we're giving is the 30% fat,

我们最高给与含脂30%的饮料

and this is very similar to double cream.

与高脂厚奶油相似

This activates¹ not just the taste,

这不但刺激了味觉区

but also we see touch areas of the brain,

触觉区也起了反应

associated with the texture² of the fat in the mouth.

这与脂肪的口感有关

And we also see reward areas of the brain,

还有反馈区

associated with their response to that rewarding property of the fat.

它会对高浓度脂肪作出反应

1 activates   

使活动，起动，触发( activate的第三人称单数 )

参考例句：

• Activates the window and displays it in its current size and position. 激活窗口，保持当前的大小及位置不变。
• Pulling out the alarm switch activates alarm and pushing it deactivates it. 闹钟的开和关是通过拔出和按入闹铃开关实现的。

2 texture   

n.(织物)质地；(材料)构造；结构；肌理

参考例句：

• We could feel the smooth texture of silk.我们能感觉出丝绸的光滑质地。
• Her skin has a fine texture.她的皮肤细腻。