Related topics: Gardening
prop·a·gat·or /ˈprɒpəɡeɪtə $ ˈprɑːpəɡeɪtər/ noun [countableC] 1. someone who spreads ideas, beliefs etc 〔思想、信仰等的〕传播者,宣传者
2. DLGa covered box of soil in which young plants or seeds are placed so that they can grow 〔供幼苗或种子生长的〕培育箱