Vitamin A is a fat soluble vitamin, you need fat to absorb and assimilate it properly.

因为生素 A 是一种脂溶性生素，需要油脂助才能被人体正吸收。

Yeah, sure. This is nothing but a dietary thing. Naphthalene is a gas, a fat soluble gas.

萘是一种气体， 一种溶于脂肪气体。

But this doesn’t make sense for vitamins A and D, which are fat soluble vitamins, meaning

可是生素A和D是脂溶性生素.

These individuals can have trouble absorbing foods and dietary fats, often lose weight, and even develop a deficiency in vitamins A, D, E and K—which are fat soluble vitamins.

患者出现食物和膳食脂肪吸收困难，体重减轻，甚至生素A、D、E、K缺乏——这些生素都是脂溶性。

It plays the biggest role in the digestion and absorption of most nutrients, including the breakdown-products of macronutrients, zinc, water-soluble vitamins, and fat soluble vitamins, namely A, D, E, and K.

它是消化吸收大多数营养物最重要场所，包括营养素分解产物、锌、水溶性生素，以及生素A/D/E/K等脂溶性生素。

Weston Price's book highlights the importance of fat soluble vitamins in the diet for proper growth and development, but for this video we'll look at how a different characteristic of the diet can affect skull growth.

Weston Price 在书中强调了饮食中摄入脂溶性生素对于生长和发展重要性，但我们将在视频中看到饮食不同特点对颅骨生长影响。