vt.用力插入；使陷入；vi.跳入；全心投入；突降，俯冲；n.投入，陷入；游泳，跳水； 变形： 过去式：plunged过去分词：plunged现在分词：plunging第三人称单数：plunges 双语释义：v.(动词)vi. 颠簸 thrust its bows into the watervt. 使陷入 put into, put or go suddenly and with forcen.(名词)[S]投入,跳入; 猛冲 an act of plunging, especially head fi