phallic organ

例句：

1. 1. The anatomy of the penis is a fascinating subject for medical students.
   对于医学生来说，阴茎的解剖学是一个令人着迷的主题。
2. 2. He was surprised to find that his penis had grown so large.
   他惊讶地发现他的阴茎已经长这么大了。
3. 3.The phallic organ has been used in ancient times as a symbol of power and authority.
   阳具器官在古代被用作权力和权威的象征。