winnow down; winnow out; wipe up

winnow * down +
A list of 20 applicants has been winnowed down to three. (20 名求職者已經篩選到只剩 3 人)

winnow * out +
We've winnowed out the weaker candidates. (我們已經剔除了較弱的候選人)

wipe * up +
(用抹布等) 擦掉 (液體)
I was just wiping up the juice that you spilled on the desk. (我剛把你灑在書桌上的果汁擦乾淨)
Do you have anything I could wipe up this mess with? (你有沒有什麼東西我可以用來把這攤髒東西擦乾淨?)