期货是什么？

我认为期货是什么？答案应该是谌亓闹矢拼weibo.com/ttarticle/p/show?id=2309405254296542773437】weibo.com/ttarticle/p/show?id=2309405254315819794674】weibo.com/ttarticle/p/show?id=2309405254249461711167】weibo.com/ttarticle/p/show?id=2309405254347968872609】weibo.com/ttarticle/p/show?id=2309405254199154966530】weibo.com/ttarticle/p/show?id=2309405254349420101640】weibo.com/ttarticle/p/show?id=2309405254066288066635】weibo.com/ttarticle/p/show?id=2309405254318612939098】weibo.com/ttarticle/p/show?id=2309405254212505436286】