But When they gave high vitamin D and normal vitamin A, they got hypervitaminosis D.

但是当给予火鸡大剂量的维生素 D 和正常量的维生素 A 时，他们则会出现维生素D过多症。

So maybe we don't get enough vitamin D?

所以我们可能没有得到足够的维他命D？

It also makes vitamin D and substances that help digestion.

它还生产维他命D和 其他帮助消化的一些物质。

Pronouncing your D this way will help your English sound natural.

这样子念你的D音会帮助你的英语听上去更自然。

" How long have you been 'Big D', then? " , said Harry.

“你什么时候成'D哥'了？”哈利问道。

When you put a D at the end of fine...

好的后面还加个哪。

Basically the more Vitamin D, the more an enzyme CYP3A4 is produced.

基本上，维生素D越多，产生的CYP3A4酶就越多。

When it's rather easy you can start making the D a little lighter - d'r, d'r, d'r.

当发这个音变得容易时，你可以试着把“D”音发的更轻：“d 'r”。

Now, when there's not enough active vitamin D, calcium or phosphate, there's inadequate mineralization.

当活性维生素D、钙或磷酸盐缺乏时，就会发生矿化不全。

Another study published in the journal Menopause found a link between more vitamin D and lower cholesterol levels.

发表在《更年期》杂志上的另一项研究发现，维生素D含量增加与胆固醇水平降低之间存在联系。

Did you see how my lips were already forming the R when I made the D? Drop.

注意到在发D时我的嘴唇就已经开始做R音的嘴型了。

It's crucial for building cells and helps the body make vitamin D, along with testosterone and estrogen.

它对构建细胞至关重要，并帮助身体制造维生素D，以及睾酮和雌激素。

Normally, the kidney helps to activate vitamin D which helps to increase absorption of calcium from the diet.

正常情况下钙辅助活化维生素D，后者有利于饮食中钙的吸收。

It could be answer choice D or E.

答案可以选 D 或者 E。

You can reduce them further by dropping the D, unless the next sound is a vowel or a diphthong.

进一步可以省略D音，除非下一个声音是元音或双元音。

So, I'm not pronouncing the D in 'sandwich', I'm just pronouncing the consonant N sound before it.

所以，我们有发 'sandwich' 里 D 的音，我只发了它前面的辅音 N 的音。

Additionally, parathyroid hormone can boost 1-alpha-hydroxylase activity, which forms more active vitamin D, increasing gut absorption of calcium.

此外，甲状旁腺激素可以增加1-α-羟化酶的活性，从而形成更多有活性的维生素D，增加肠道对钙的吸收。

Although we get vitamin D from food like fish and eggs, we can also get it from the sun!

虽然我们可以从鱼类、蛋类等食物中获得维他命D，但是我们也能从阳光中获得维他命D。

Interracial marriage was legal there, and the couple wed.

在那里种族通婚是合法的，这对情侣结为了夫妻。

" D-Defense Against the D-D-Dark Arts, " muttered Professor Quirrell, as though he'd rather not think about it.

“对付黑一黑一黑魔法的防一防御术。”奇洛教授含糊不清地说，似乎他觉得还是不提为好。