a covered, typically electrically heated, container filled with earth or compost, used for germinating or raising seedlings 种子发生罐(尤指用电加热、内装土壤或肥料、用来使幼苗发芽或发育的有盖容器)
a person who spreads and promotes an idea, theory, or branch of knowledge (观点、理论或知识的)传播者,宣传者 a propagator of the doctrine. 该信条的传播者。