一個人把獎全拿走
這一族保留了畫面的完整動作：抽出名字，一個人拿走全部。差別只在桌上那疊東西是誰出的。
noun · C1
A kind of betting in which everyone puts money in, and the one person who picks the winner takes all the money that was put in.
賭金全拿的抽籤賭局
核心畫面
Picture everything pushed into the middle of a table — everyone's money, one pile. Then one name comes out, and that person sweeps the whole pile away. Nothing is shared and nothing is left. Two things live in that picture: one winner takes all of it, and until the name comes out, nobody knows who.
可以想成桌子中間堆著大家推進去的錢，一整疊。然後抽出一個名字，那個人把整疊掃走。沒有分配，也沒有剩下。這個畫面裡藏著…更多收起
可以想成桌子中間堆著大家推進去的錢，一整疊。然後抽出一個名字，那個人把整疊掃走。沒有分配，也沒有剩下。這個畫面裡藏著兩件事：一是贏家一次全拿，二是名字抽出來以前，誰也不知道是誰。這個字後來的各種用法，不是留下前面那件事，就是留下後面那件事。From the word’s history
From sweep + stake: the stakes are what everyone puts in, and the winner sweeps them.
字源資料說它由 sweep（掃）加 stake（押上的賭注）組成。stake 是大家投進去的東西，sweep 是贏家把它全部掃走——核心畫面就是這兩個字擺在一起的樣子。
Wiktionary (kaikki extract) 'sweepstake': "From sweep + stake."
Two branches
還不知道誰會拿走的競逐
這一族保留的是畫面的另一半：名字還沒抽出來的那一刻。它借的是「懸而未決」，不是真的有人在下注。
noun · C2
A competition, election, or race for a big position in which nobody yet knows who will win. Usually plural, and usually with the prize named in front of it: the presidential sweepstakes.
（勝負未定的）競逐