betting

例句：

1. 1.He decided to bet on the horse he had backed before.
   他决定下注他之前支持的那匹马。
2. 2. Betting on sports is a popular pastime for many people.
   许多人喜欢通过下注体育比赛来消遣。
3. 3.The bookmaker was accused of cheating in the betting ring.
   博彩公司被控在赌博圈中作弊。