There were twenty or so people there.
那兒有差不多二十個人。
Pick a number from one to twenty.
從一至二十中挑選一個數。
He finally won his freedom after twenty years in jail.
他蹲了二十年監獄以后終于獲得了自由。
They met again after a gap of twenty years.
他們闊別二十年后又見面了。
So that's twenty of each sort, right?
那么，每一種都是二十個，對不對？