pain caused by venous swelling at or inside the anal sphincter
造句
用作名詞(n.)
The causes of hemorrhoids are similar to the causes of varicose veins. 導致痔瘡形成的原因跟靜脈曲脹的形成原因差不多。
Hemorrhoids consist of dilated submucosal veins which may thrombose and rupture with hematoma formation. 痔瘡由擴張的黏膜下血管形成，此黏膜下血管可形成血栓和破損伴有血腫的形成。
These jokes are put down here so more hemorrhoids patients and doctors would have a moment of relief from their ordeals. 將此等笑話記錄于此，以便使更多痔疾的患者及醫師們，都可以在他們的磨難中略得片刻的舒緩。