v.跳跃；跃过；跃
n.跳跃；跃
I leap for joy at the good news. 我一听到这个好消息高兴得跳了起来。
His name leapt out at me from the newspaper. 报纸上他的名字一下子跳入我的眼帘。
The boy took a leap from the window. 那个男孩从窗口跳下去。
He got over the stream with a single leap. 他一跃就跳过了小溪。
leap用作名词的基本意思是“跳跃,激增”,作“激增”解时表示数量上的增加,常后跟介词in。
