you are altering its chemical properties

是在改变食物的化学性质
to take a soft fat and make it more solid.

将软脂酸变为硬脂酸
So, stick margarine compared to tub margarine.

与软质人造黄油相比
The stick margarine has been hydrogenated

固体人造黄油是氢化过的
to make it a more solid form.

使得其质地更硬
In this process, the margarine becomes less healthy.

氢化过程使得黄油更不健康
You see partially hydrogenated oils as an ingredient in many foods.

在很多食物的成分中都能看到部分氢化油
That links to the Trans fat thing and you want

这和反式脂肪有关
--for health reasons it's probably good not to eat too many of those.

为健康考虑最好少吃那些食物
The saturation is interesting.

饱和度很值得关注
You hear a lot about

你们应该都听说过
saturated fat, about polyunsaturated fat,

饱和脂肪多不饱和脂肪