1）赔率随时可以改 / Odds can be changed at any time.
2）奖品的Icon 可以更换 / The icon of the prize can be changed.
3）奖品自由更换 / Prizes are free to change.
4）Database可以看什么code赢了什么奖品 / The database can see what codes have won what prizes.
5)   我们有提供免费弄voucher code给顾客 / We have provided free voucher code to customers.
6）每一个voucher code都是random字眼，顾客不容易猜到 / Each promo code is a random word / number, which is not easy for customers to guess.
7）一个voucher code只能玩一次 / One promo code can only be played once.