短语词组用作动词 (v.)～+名词propagate sound 传播声音～+副词propagate cunningly 精巧地传播propagate easily 容易传播propagate peacefully 安静地传播propagate rapidly 迅速蔓延～+介词propagate by taking cuttings 用插条的方法繁殖propagate by vibrations 靠震动传播短语 返回 propagating