While extending the range may have represented a relatively affordable technical task, equipping the smaller UAVs to efficiently deliver a biological agent would have been a much more complicated undertaking.
9. 尽管扩大航程可能是相对容易的技术任务，但改装较小型无人驾驶航空器，使其能高效投放生物制剂，则是一项复杂得多的任务。