先头部队的英文：
spearhead

参考例句：

The leading companies recoiled from the murderous crossfire from the pillboxes.
先头部队受到掩体中交叉火力的攻击而撤退。

We sent out an advance party of soldiers.
我们派出一支先头部队。

The regimental headquarters ordered the second company to take the lead and the fourth company to bring up the rear.
团部命令二连担任先头部队，四连殿后。

The regimental headquarters ordered the second company to take the lead and the fourth company to bring up the rear
团部命令二连担任先头部队,四连殿后。

The soldiers ran hard and tried to catch up to the advanced battalion
士兵们拼命地跑，想赶上先头部队。

Our advance forces encountered a squad of enemy patrols.
我军的先头部队和敌军的一个班巡逻兵遭遇。

The vanguard of the American army reached the Elbe, only fifty-three miles from Berlin.
美军先头部队到达易北河，离柏林仅五十三英里。

spearhead是什么意思：
n. 矛尖,突击队的先遣队,攻击的最前线
vt. 做先锋,在前面带头做先锋

Plastics spearheaded the advance in synthetic materials.
塑料是合成材料发展的先导。

The airborne troops spearheaded the crossing of the river.
空降兵在渡河作战中担任先导。

The new managing director will act as spearhead of the campaign.
新上任的常务董事将在这场运动中挂帅.

The powerful Xinshidai group is spearheaded by the separate legal entity of the china Xinshidai Corporation.
实力雄厚的新时代集团由独立法人实体中国新时代公司带领。

He seemed to spearhead every important city so fearlessly and successfully
每次进攻重要城市，他似乎都以大无畏的精神充当先锋，而且攻无不克，战无不胜。