Sinkhole



GRE

解释

GRE 红宝书

• n. 污水池
• ［记］ 组合词: sink（水池）+hole（洞）

Webster Collegiate

noun

• Date: 15th century
• 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 2
• 4. something (as an unprofitable investment) that steadily drains money or resources <a financial sinkhole>

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