v.当…的先锋,带头( spearhead的过去式和过去分词 );
例句:
She spearheaded the effort to find a cure for the disease.
她领导这项寻找疾病治疗方法的工作.
The tanks spearheaded the offensive.
坦克在那次进攻中打头阵.
The airborne troops spearheaded the crossing of the river.
空降兵在渡河作战中担任先导.