winner造句和句子意思？

1.Listeners have been invited to phone in to pick the winner.聽眾被邀請打進電話選擇贏家。

2.By September, they will have whittled the list down to a winner.9月之前他們會從名單中確定出最后的贏家。

3.I think your idea is a winner.我認為你的想法能夠成功。