What does lesson mesn in the ad in Chinese?是什么意思

What does lesson mesn in the ad in Chinese?是什么意思 What does lesson mesn in the ad in Chinese? what does lesson mean in the poster? What does the underlined word"boring"mean in Chinese? What does the word "opposite" mean in Chinese? what does the word expensive mean in chinese? what does the underlined word "together"mean in Chinese? What does the underlined word “sash”mean in Chinese? what does the underlined word "RSVP"probably mean in chinese What does the underlined word"raw" probably mean in Chinese. what does the underlined word "adopter" mean in chinese? What does the word"lamp"m in Chinese?