1. This valuable patent is the masterpiece of my lifetime. If you want it I'll sell you for one million U.S. dollars.2. This painting is my most precious belonging. It's painted by Picasso and is worth millions of dollars.
 masterpiece precious belonging
你剛剛說了甚麼? 不好意思，我放空了一下。 (請填空)
What did you just say? I am sorry. I just lost my train of hought.