词汇	天坑
释义	天坑 TiānKēngkarst topography
随便看	transition times transition tint transition tip transition tissue transition tissure transition to democracy transition to flaming Transition to Modernization transition to Socialism System Transition to the Modern Age transition tour transition-tour Transition to War transition town Transition Towns transition track transition trainer transition training Transition Training Unit transition transformation transition transient transition tree transition trial Transition Tropical Pacific Air Mass transition tumor