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

因为生素 A 种脂溶性生素，需要油脂的帮助才能被人体正常吸收。

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

种气体， 种溶于脂肪的气体。

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

可生素AD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.

患者会出现膳脂肪的吸收困难，时常会体重减轻，甚至生素A、D、E、K缺乏——这些生素都脂溶性的。

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.

它消化吸收大多数营养的最重要场所，包括营养素分解产、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 在书中强调了饮中摄入脂溶性生素对于生长发展的重要性，但我们将在视频中看到饮的不同特点对颅骨生长的影响。