But speeds can be boosted with myelination and increased axon diameter.

但是速度可以因髓鞘化和增加轴突直径而得到提升。

It will alter my behavior without my knowledge, and it can increase the diameter of my pupils if I experience something I really like.

它会在人们没有意识到的情况下改变行为，并扩大瞳孔，仿佛我们真的经历了喜欢的事情一样。

Changes in diameter can be temporary, like during vasoconstriction or vasodilation — when the diameter increases or decreases, allowing more or less blood through.

直径的变化可能是暂时的，比如在血管收缩或舒张期间——直径增加或减少，允许或多或少的血液通过。

Going back to that turkey, when you're running, the sympathetic nerves stimulate those beta 2 adrenergic receptors and increase the diameter of the airways.

再来看逃离大鹅的例子：当我们在奔跑时，交感神经系统激动β2受体，使气道扩张，以吸入更多氧气。

In terms of medications, all three can be treated with Nitroglycerin which is a vasodilator that increases blood vessel diameter to allow more blood flow.

用药方面，3种心绞痛都可以用硝酸甘油治疗；硝酸甘油是扩血管物质，增加血管直径，使更多血流通过。