| 单词 | sinkholes | 
| 释义 | sinkholenoun  sink·hole  ˈsiŋk-ˌhōl   1    : a hollow place or depression in which drainage collects   2    : a hollow in a limestone region that communicates with a cavern or passage   3    : sink sense 2   4    : something (such as an unprofitable investment) that steadily drains money or resources  a financial sinkhole   sinkholes nounas in basins   Synonyms & Similar Words Relevance     
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