collapsev.（使）倒塌；（使）崩溃；（使）瓦解；折叠n.倒塌；崩溃；暴跌collapsed loess湿陷性黄土collapse hazard崩塌灾害Collapse in air空中解体collapsed chest胸廓塌陷collapse doline塌陷漏斗collapse branchn.折叠分支collapse causes坍塌原因collapse column陷落柱collapse theory压溃理论collapsed riser折叠提升管