Sciatica refers to aching and sharp leg pains that radiate below the knee.

坐骨神经痛是指向膝盖以下放射的疼痛，尤其是小腿锐痛。

The fever grew rapidly worse towards evening; he had aching pains in all his limbs, and a terrible headache.

傍晚时分，烧得更厉害了。 他四肢酸痛， 头痛得厉害。

So when you get hurt, the electrical impulses from thicker nociceptors trigger sharp, intense pain, while thin, unmyelinated nociceptors are responsible for the dull, aching pain that follows.

所以当你受伤时，具有更厚质的伤害感受器所传导的电脉冲就会引发强烈的剧痛，而薄质且无髓鞘的伤害感受器则会产生隐隐的酸痛。