ischiopagus

例句：

1. 1. He was embarrassed by the fact that he had a big penis.
   他因为自己有一个大阴茎而感到尴尬。
2. 2. The doctor explained to the patient what caused his penis to swell up.
   医生向病人解释了导致他的阴茎肿胀的原因。
3. 3. The couple's marriage was over after they discovered their penis sizes were too different.
   夫妻俩在发现他们的阴茎大小差异太大后离婚了。