She was so nervous during her first bungee-jumping experience that she couldn't speak.

bungee-jumping 是由 bungee（弹性绳）和 jumping（跳跃）组成的复合词。bungee 指一种有弹性的绳索，jumping 是动词 jump 的现在分词形式，表示"跳跃"的动作。 bungee-jumping 指"蹦极运动"，是一种极限运动，参与者用弹性绳绑住脚踝从高处跳下，绳子会反弹使人上下弹跳。