(1)有奖竞赛；有奖竞猜

(2)投票竞选

(3)有奖销售
通过销售奖券而抽奖。

• impairment of capital
• impairment of earning ability
• impairment of justice
• impairment of memory
• impairment of mind
• impairment of obligation of contracts
• impairment of vested right
• impalare
• impalement
• impan(n)el
• imparcare
• impargamentum
• imparl
• imparlance
• imparsonee
• impartial expert
• impartial hearing
• impartiality
• impartial juror
• impartial jury
• impartial trial
• impartible fee
• impartible feud
• impatronization
• impeach