a.

1. 头朝前的；正面的
   The window offered me a head-on view of the church.

   教堂的前景透过这扇窗呈现在我面前。

2. 迎面的，直接的
   His speech was a head-on denunciation of the unpopular new policy.

   他的发言是对不得人心的新政策的迎头痛斥。

ad.

1. 头朝前地；迎头
   The sled struck the tree head-on.

   雪橇迎头撞上那棵树。

2. 正面针对地
   Let's meet the problem head-on.

   让我们正视这一难题。

adj.

adv.

1. with or involving the front of a vehicle.
2. with or involving direct confrontation.