Warning: file_put_contents(): Only 0 of 7335 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.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_开心英文字典_柠咚词
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)