……I know this, because I’m not French…..I am, American!

Retire’….in the meaning means finished….and then the meaning of finished is better placed as “withdraw” to make the translation proper. Thus, “retire” means “withdraw”

Examples:

The old man did retired from his job! (He’s not working)

The old man did finished his job! (He’s not working)

The old man did withdraw from his job! (He’s not working)

They all mean the same…….

Edit -For some reason this question lingered long after I had answered it. I turned my gaze from the adjective to the verb “retirer”, and discovered that among its many meanings is “remember”. Voila!

I know this because I’m French

What you withdrew from your experiments and activities

What do you remember of your experiences and activities?

.