Sleight of hand was performed at the birthday party.
Expose what you want to expose by making an announcement. Then show the world!
This is a jukugo word that uses the on'yomi readings of the kanji. You haven't learned this reading for 露 yet, so here's a mnemonic to help you:
You're making the announcement from a row (ろう) boat. People will pay more attention when you're in a row boat because it's kind of weird. Especially since you're in a row boat on a stage.