1. One should not rush headlong into buying stocks.
    不应轻率购买股票。

2. He plunged headlong into the river.
    他一头钻进河里。

3. The boy fell headlong.
    那男孩摔了个倒栽葱。

1. He made a headlong plunge into the river.
    他一头栽进河里。

2. They made a headlong dash for the door.
    他们迅猛地向门口冲去。

1. headlong的反义词

1. 轻率的：headlock 摔角法 | headlong 轻率的 | headman 首领

2. 头向前的：headline 标题 | headlong 头向前的 | headquarters 总部

3. 轻率地：Tout:标榜;吹嘘 | Headlong:轻率地 | Widget:(不知名的)小器物,小玩意儿

4. 头向前：headload 头上负荷 | headlong 头向前 | headmeter 压头计

1. 快速地
    If you move headlong in a particular direction, you move there very quickly.

    e.g. He ran headlong for the open door.
           他飞快地朝敞开着的门跑去。

2. 头朝下地
    If you fall or move headlong, you fall or move with your head furthest forward.

    e.g. She missed her footing and fell headlong down the stairs.
           她一脚踩空，头朝下摔下了楼梯。

3. 莽撞地;轻率地
    If you rush headlong into something, you do it quickly without thinking carefully about it.

    e.g. Do not leap headlong into decisions...
           不要轻率地作决定。
    e.g. The country, they say, will inevitably now plunge headlong into decadence.
           他们说，现在整个国家会不可避免地一头陷入衰退中。

1. with the head foremost

    e.g. a headfirst plunge down the stairs
           a headlong dive into the pool

    Synonym: headfirst

2. excessively quick

    e.g. made a hasty exit
           a headlong rush to sell

    Synonym: hasty

1. with the head foremost

    e.g. the runner slid headlong into third base

    Synonym: headfirst

2. in a hasty and foolhardy manner

    e.g. he fell headlong in love with his cousin

    Synonym: rashly

3. at breakneck speed

    e.g. burst headlong through the gate

    Synonym: precipitately