So, indeed, we are talking about a lot of void and a tiny little bit of extremely dense being.
事实上,更多的是许多真空,只有极小部分的高密度的物质。
And they raise the HDL-- I mean it is good for you that -well let's see, okay, no I got that wrong.
它们会增加高密度脂蛋白,就是说对身体有益,哦,不,我弄错了
So, for example, we have this average level, and then it can go high where we have the peak, or it can go very low. We can also discuss sound waves, so again it's just the periodic variation of some property -- in this case we're talking about density, so we have high density areas and low density areas.
例如这是平均位置,在峰的位置水位高,在谷水位低,我们也可以,讨论声波它也是某种,量的周期变化,在这里我们,讨论的是密度,我们有高密度区和低密度区。
It probably lowers HDL but I'll have to go back and check that.
它可能降低了高密度脂蛋白,但我要回去查一查
It raises both LDL and HDL this can't be right.
低密度脂蛋白和高密度脂蛋白都增加了,这不对
There are different kinds of cholesterol, and the first cut that people made at this were saying that there are things called HDL and LDL, which is high-density lipoproteins and low-density lipoproteins, the LDL.
胆固醇分为许多种,人们分离胆固醇时,最早得到的馏分是HDL和LDL,HDL即高密度脂蛋白,LDL即低密度脂蛋白
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