erection with scaffolding method

例句：

1. 1. Hestood up and walked to the door.
   他站起来走到门口。
2. 2. The doctor told him thathe had an erection.
   医生告诉他他有勃起。
3. 3. She was standing up for her beliefswhen she heard the news.
   她听到这个消息时，正站在自己的立场上。