head-on

形容词 head-on:

1. characterized by direct opposition
2. meeting front to front
   同义词：frontal

副词 head-on:

1. in direct opposition; directly
2. with the front foremost

1. The car hit the tree head-on.
   汽车迎面撞到树上。

head-on

adv.（副词）
With the head or front first:
正面地，头对头地：头或前部在先地：
例句：
The cars crashed head-on.
汽车迎头对撞

In open conflict; in direct opposition:
公开对抗地；直接反对地：
例句：
.I have wondered since whether it would have been wiser to meet the issue head-on.(Henry A. Kissinger)
.我为不知公然反对此事是否更为明智而感到疑惑.(亨利A.基辛格)

adj.（形容词）
Facing forward; frontal.
向前的；正面的
With the front end foremost:
正面一端在前的：
例句：
a head-on collision.
正面冲撞