暴雨过后，公园里突然出现了一个巨大的地陷坑。

After the heavy rain, a large ___sinkhole suddenly appeared in the park.

这个长期建设项目变成了一个资金黑洞，吞噬了大量预算却毫无进展。

The long-term construction project turned into a financial ___sinkhole, swallowing huge budgets without any progress.