zhè / chǎng / wēi / jī / liú / xià / de / yú / dú / xū / yào / hěn / cháng / shí / jiān / cái / néng / xiāo / chú

这场危机留下的余毒需要很长时间才能消除。

The harmful effects left by the crisis will take a long time to eliminate.