This enzyme is important because it helps break down the amino acid leucine.

这种酶十分重要，因为它能分解氨基酸白氨酸。

One last factor in Ketosis preserving muscle is leucine.

酮症最后一个储存能量的要素是亮氨酸。

Without this enzyme, leucine can only be broken down part-way.

没有这种酶，亮氨酸只能被部分分解。

When you're in ketosis, you have a higher fasting blood leucine level.

当你处于酮症状态，的血液中亮氨酸水平更高。

Glycine, alanine, valine, leucine are all nonpolar assets and this is how you drop them in an exam.

甘氨酸，丙氨酸，缬氨酸，亮氨酸全都是非极的，这就是你如何征服考试的秘诀啦！

The bacteria hiding out between your toes produce this acid when they're chomping away on leucine.

当隐藏在脚趾的细菌亮氨酸，就这种酸。

Corn is actually very high in leucine.

玉米中亮氨酸含量实际上非常高。

Well, it'll probably track with plasma leucine.

嗯，它可能追踪血浆亮氨酸。

Measurements like fractional synthetic rate within 0 to 5 hours post-exercise were reduced by as much as 20 percent through leucine tracer observations.

通过亮氨酸示踪观察，诸如运动后0到5小内的分数合成率等测量值降低了20%。

And leucine is a key branch chain amino acid that has an anabolic effect on the body so it preserves lean body mass.

而亮氨酸是一种在体内起合成代谢作用的，关键支链氨基酸，所以它能保护体内脂肪较少的肌肉块。

There is, so far, no cure for isovaleric acidemia, but some treatments — like avoiding foods rich in leucine, and taking supplements of other, non-threatening amino acids — can help keep patients safe.

目前没有治疗异戊酸血症的方法，但是一些疗法——比如避免进食白氨酸过多的食物，从其他物质中，比如没有威胁的氨基酸，能够保证患者安全。

Essential amino acids, or EAAs, are amino acids that our body needs but cannot produce on its own, and there are 9 of them: Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

基本氨基酸，简称 EAA，是我们身体需要但不能自己的氨基酸，其中有 9 种：组氨酸，异亮氨酸，亮氨酸，赖氨酸，蛋氨酸，苯丙氨酸，苏氨酸，色氨酸和缬氨酸。

He found that inside of our emotional tears -- not our everyday, like, yawning tears, but our emotional tears -- there's high concentrations of stress hormones and leucine enkephalins, which, easier on my tongue, is endorphins.

他发现在我们情绪化的眼泪中——不是我们日常的， 比如打哈欠的眼泪，而是我们情绪化的眼泪——有高浓度的压力荷尔蒙和亮氨酸脑啡肽， 我的舌头更容易理解的是内啡肽。