a sell-out tour的用法和样例：
- That small firm in a London suburb refused to sell out.
- It is neither a call to get public feelings and sympathy, nor is it a sell out to earn more money and sing his own praises at the same time.
- A sell out crowd filled the Ebisu south course stands and braved the ZERO degree chills and snow to see the best drifters Japan has to offer!
- It's too bad the shop has a sign of sell out.
- Honest poverty is a gem that even a king may be proud to call his own, but I wish to sell out.