滚雪球

(of a business, project, etc.) get bigger and bigger as it proceeds; snowball

♦ 放高利贷是~, 连本带利, 越滚越多。 When practising usury, the capital and interest can have a snowball effect.

♦ 他的买卖近来像~似的, 越做越大。 His business has snowballed recently.