purulence

After the bandage was removed, the purulence on the cloth told us the cut had become infected.

取下绷带后，布上的脓液告诉我们伤口已经感染。

用法提示：purulence 是名词，在此指脓液，作主语。

The doctor explained that the yellowish purulence was a sign that the body was fighting the bacteria.

医生解释说，这种黄色的脓液是身体正在对抗细菌的迹象。

用法提示：purulence 是名词，在从句中作主语，指脓液。

She cleaned the wound carefully until no purulence remained, then applied a fresh dressing.

她仔细清洗伤口，直到不再有脓液，然后换上新敷料。

用法提示：purulence 是名词，作宾语，表示脓液。