adj.頭向前的；匆促而用力的；輕率的

adv.頭向前地；猛然的用力的；輕率地

He made a headlong plunge into the river. 他一頭栽進(jìn)河里。

The calm water ends there and the river begins a headlong plunge. 平靜的河水突然中斷，開始奔騰直瀉而下。

They made a headlong dash for the door. 他們迅猛地向門口沖去。

She was so simple and young and headlong. 她是那么單純、年輕和直率。

A young man rushed headlong into the crowd. 一個年輕人急匆匆用力擠進(jìn)人群。

He rushed headlong into marriage. 他倉促輕率地結(jié)了婚。