Focus on the first seven seconds. What did you think and feel? How did you "read" the other person? (Para. 2)
Meaning: Pay special attention to the first seven seconds. What did you feel and think? How did you understand the information about the other person?
focus on: pay attention to; have as its main point of interest
We must focus on our sales force as the chief means of improving trade. 作為促進(jìn)貿(mào)易的主要手段，我們必須加強(qiáng)我們的銷售隊(duì)伍。
This year our meeting focuses on the question of children's rights. 今年我們的會(huì)議集中討論兒童權(quán)益的問(wèn)題。