一等奖：the first prize
二等奖：the second prize
三等奖：the third prize
设置X等奖：set (或set up) the Xth prize for sb.
设置一、二、三等奖：set the first, the second and the third prize
set up the first prize,the second one and the third one.
Set up the first prize,the second prize
and the third prize .
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