outflow

The campaign has seen a massive outflow [=the campaign has spent a lot] of funds/money/cash in recent months.近几个月来，这场运动耗费了大量的资金/金钱/钞票。

We joined the outflow of fans from the stadium after the game.比赛结束后，我们加入到从体育馆内涌出的粉丝人流之中。

The vents provide improved outflow of air/water.这些出口改善了空气/水的排放。