急性偏头痛发作时，大脑某些区域的活动会有所改变，这样引起的不仅仅是疼痛，还有一系列其它症状。

There are changes in activity of certain brain regions which occur during an acute migraine attack that give rise not just to pain, but a wide variety of symptoms.

youdao

我总是尽量遵循一个原则：如果跑步十分钟后开始有些一瘸一拐，在改变步态的时候，那么你可能就是受伤了，而不仅仅是疼痛。

I always try to follow one key rule: If you are gimping - altering your gait - after 10 minutes of running, then it is an injury and not just an ache or pain.

youdao

这种智能芯片比火柴头还稍小，而现今最好的植入物却仅仅是如火柴盒一样大小，这种芯片通过阻断传向大脑的疼痛信号来发挥作用。

Slightly smaller than the head of a match - the best implants today are only as small as a matchbox - the chip works by blocking pain signals on their way to the brain.

youdao