先头

American troops formed the spearhead of the attack.

美军是这次进攻先头部队。

The ideal referring source will also acknowledge help with the treatment plan from the endodontist even if it simply is the prognostication of the individual procedure.

这种理想资源也会提供在牙髓学治疗方案方面帮助 ，即使它是个体程序先头部分。