Both offered good comments. Thank you. For Aihua: 1, "the green light 'used in a single line to hint  that the green apple functions as a green light ( pay
attention to the last line in the fourth stanza.) If she were driving, she
couldn't play the apple; if the narrator were driving, he couldn't steadily
look at her body, so obviously it happens in a room. 2. " steadily" is better,
as it saves a word to make this line shorter. I may adopt your suggestion. You
are great!Thank you.