Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/b8c2baa010a1e285e18ee955d2b70f22.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 sinkhole英英字典_sinkhole剑桥英语解释_sinkhole柯林斯英文解释_沉淀汉英词典
1. N a depression in the ground surface, esp in limestone, where a surface stream disappears underground 落水洞; 尤指石灰石地面下陷，地表水消失于地下 (Also called (esp Brit) swallow hole)